SM5320A

SM5320A NPC | Alldatasheet

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Technical content

SEIKO NPC CORPORATION —1 5-channel Video Buffer with Built-in wideband LPF OVERVIEW The SM5320A is a 5-channel video buffer with built-in 5th-order lowpass filters. The HD block lowpass filter cutoff frequency range can adjust from 4.10MHz to 42.7MHz by 256 steps. The lowpass filter supports 480i to 1080i format, video signal equipment analog input/outputs. For video input systems, the device functions as a next-stage ADC system anti-aliasing filter. For video output systems, the filter reduces video DAC aliasing and external noise and can drive up to 300 Ω terminating resistance. The cutoff frequency and signal input type can be controlled using an I C-BUS , and the I C slave address can be set by ADS (3-state input) to allow up to three SM5320A on the same bus. The output gain can be varied in the range of 0dB 2.1dB (max step: 0.15dB) for each Y/C block and HD block individually using the I C-BUS. *1. When the resistor connected to ISET (R ISET ) is 1.8k Ω *2. I C-BUS is a registered trademark of NXP B.V.

FEATURES

I Supply voltages

• Analog: 4.75 to 5.25V
• Digital: 3.0 to 5.5V I Lowpass filter with adjustable cutoff frequency (256 steps) (CH-1 to CH-3)
• Cutoff frequency range: 4.10MHz to 42.7MHz ISET 1.8k Ω I Filter bypass mode function for display specifica- tions up to SXGA resolution (CH-1 to CH-3)
• Passband: 80MHz (typ) I Half fc mode switch function suitable for compo- nent signals (CH-2, CH-3) I Video input pins can be independently set to sync- tip clamp/bias inputs (CH-1 to CH-3) I Filter passband ( 1.5dB): 6MHz (CH-Y/C) I Up to 300 Ω terminating resistance drive capability I Output gain: 0dB 2.1dB (max step: 0.15dB) I Power-down function 500 µ A current consumption when power-down I I C-BUS interface control
• Slave address: 48h, 49h, or 4Ah (up to three devices can be used simultaneously, selected by ADS input)
• Data transfer rate: Fast mode (up to 400kbit/s) I Operating ambient temperature range: 0 to 70 C I Package: 28-pin VSOP

APPLICATIONS

I HDTVs I LCD TVs I PDPs I Projectors

ORDERING INFORMATION

(Top view) PACKAGE DIMENSIONS (Unit: mm) Device Package SM5320AV 28-pin VSOP 1514 28CIN YIN VCC4 VDD SDA SCL GND6 VCC5 NC ISET GND1 IN3 IN2 IN1 ADS REF GND2 OUT1 VCC1 OUT2 GND3 OUT3 VCC2 GND4 YOUT VCC3 COUT GND5 0.675TYP 9.8 ± 0.2 1.15 ± 0.1 0.22 - 0.05 + 0.1 0.12 M 0.10 0.10 ± 0.05 0.15 − 0.05 + 0.1 5.6 ± 0.2 7.6 ± 0.2 0.5 ± 0.2 0.65 0 to 10 °

SEIKO NPC CORPORATION —2 BLOCK DIAGRAM Note. The recommended value of the external resistor (R ISET ) connected to ISET is 1.8k Ω SDA ISET OUT3 VDD GND1 ADS Gain Control CH-3 CH-2 CH-1 Clamp/ Bias Bypass filter 5th order LPF Clamp Bias −2.1dB to + 2.1dB VREF REF GND6 VREF Current Source COUT GND3 OUT1 GND4 GND5 OUT2 SCL IN3 VCC5 GND2 YOUT VCC1 YIN VCC2 CIN CH-Y/C IN1 VCC3 IN2 VCC4 5th order LPF (6MHz) I C Control2 5th order LPF (6MHz) Gain Control −2.1dB to + 2.1dB Gain Control −2.1dB to + 2.1dB Clamp/ Bias Bypass filter 5th order LPF Gain Control −2.1dB to + 2.1dB Clamp/ Bias Bypass filter 5th order LPF Gain Control −2.1dB to + 2.1dB

SEIKO NPC CORPORATION —3 PIN DESCRIPTION Number Name I/O *1. I: input, O: output A/D *2. A: analog, D: digital

Description

1 CIN I A Video signal input (C)

2 YIN I A Video signal input (Y)

3 VCC4 – A Analog supply 4

4 VDD – D Digital supply

5 SDA I/O D I

C data signal input/output

6 SCL I D I

7 GND6 – A Ground 6

8 VCC5 – A Analog supply 5

9 NC – – No connection

10 ISET – A Internal current-setting resistor (R

) connection (standard 1.8k Ω

11 GND1 – A Ground 1

12 IN3 I A Video signal input (CH-3)

13 IN2 I A Video signal input (CH-2)

14 IN1 I A Video signal input (CH-1)

15 ADS I D I

C slave address select (3-state input)

16 REF O A Internal reference voltage

17 GND2 – A Ground (Y/C block)

18 OUT1 O A Video signal output (CH-1)

19 VCC1 – A Analog supply 1

20 OUT2 O A Video signal output (CH-2)

21 GND3 – A Ground 3

22 OUT3 O A Video signal output (CH-3)

23 VCC2 – A Analog supply 2

24 GND4 – A Ground 4

25 YOUT O A Video signal output (Y)

26 VCC3 – A Analog supply 3

27 COUT O A Video signal output (C)

28 GND5 – A Ground 5

SEIKO NPC CORPORATION —4 PIN EQUIVALENT CIRCUITS Number Name I/O Equivalent circuit IN1 IN2 IN3 I YOUT COUT OUT1 OUT2 OUT3 O

16 REF O

2 YIN I

130Ω YIN

SEIKO NPC CORPORATION —5 Note. Resistance values in the equivalent circuits indicate design values.

1 CIN I

5 SDA I/O

6 SCL I

15 ADS I

*1. I: input, O: output Number Name I/O Equivalent circuit 130Ω 20kΩ 200Ω CIN SDA GND 250Ω SCL GND 180Ω VCC ADS GND 250Ω

SEIKO NPC CORPORATION —6 SPECIFICATIONS Absolute Maximum Ratings V SS = GND1 GND2 GND3 GND4 GND5 GND 0V , VCC1 VCC2 VCC3 VCC4 VCC5 VDD V CC Recommended Operating Conditions Note. VCC1 to VCC5 should be applied simultaneously.

Electrical Characteristics

V CC 5.0V , V DD 3.0 to 5.5V , Ta C, fin 100kHz, V IN 1.0Vp-p, R ISET 1.8k Ω , GS1 = 04h, GS2 = 04h, R L 300 Ω , CH-1 set to clamp input, CH-2 and CH-3 set to bias input, FCDATA 227, unless otherwise noted. Parameter Symbol Condition Rating Unit Supply voltage V CC VCC1, VCC2, VCC3, VCC4, VCC5, VDD 0.3 to 7.0 V Input voltage V IN ADS, SDA, SCL, INn (n = 1, 2, 3) GND – 0.3 to V CC + 0.3 V Storage temperature range T STG 55 to 125 C Power dissipation *1. Ta = 80 C, when mounted on NPC’s regulation substrate (112 1.6mm double layer glass-epoxy substrate with 180% wiring factor) P D 1.2 W Junction temperature T J 125 C Parameter Symbol Condition Rating Unit Supply voltage 1 V CC VCC1, VCC2, VCC3, VCC4, VCC5 4.75 to 5.25 V Supply voltage difference V CC Difference between VCC1 to VCC5 pin each 0.1 V Supply voltage 2 V DD VDD 3.0 to 5.5 V Operating ambient temperature Ta 0 to 70 C Parameter Symbol Condition Rating Unit Test levelmin typ max Current consumption 1 *1. Total of current consumption of VCC1, VCC2, VCC3, VCC4, VCC5 and VDD, when no input signals. ICC1 Filter mode, FCDATA = 255 − 110 150 mA I Current consumption 2*1 ICC2 Filter bypass mode − 75 100 mA I Current consumption 3*1 ICC3 Power-down mode − – 500 µAI HIGH-level input voltage V IH1 SDA, SCL 0.7 V DD −− VI LOW-level Input voltage V IL1 SDA, SCL −− 0.3 VDD VI ADS HIGH-level input voltage V IH2 ADS 0.8 V CC −− VI ADS LOW-level input voltage V IL2 ADS −− 0.2 VCC VI ADS open-circuit input voltage V OPEN ADS VCC/2 − 0.2 − VCC/2 + 0.2 VI LOW-level input leakage current I LL SDA, SCL, VIN = 0V −− 1.0 µAI HIGH-level input leakage current I LH SDA, SCL, VIN = VDD −− 1.0 µAI SDA output voltage V OL SDA = LOW output, Sink current = 3mA 0 − 0.4 V I

SEIKO NPC CORPORATION —7 AC Characteristics (I2C-BUS) VCC = 5.0V , VDD = 3.0 to 5.5V , Ta = 25°C, unless otherwise noted. Parameter Symbol Condition Rating Unit Test levelmin typ max SCL clock frequency f SCL 0 − 400 kHz II SCL hold time (start condition) t HD;STA 0.6 −− µ sI I SCL clock LOW-level pulsewidth t LOW 1.3 −− µ sI I SCL clock HIGH-level pulsewidth t HIGH 0.6 −− µ sI I SCL setup time (start condition) t SU;STA 0.6 −− µ sI I SDA data hold time t HD;DAT 0 − 0.9 µsI I SDA data setup time t SU;DAT 100 −− ns II SDA, SCL rise time t r −− 300 ns II SDA, SCL fall time t f −− 300 ns II SCL setup time (stop condition) t SU;STO 0.6 −− µ sI I SDA, SCL input capacitance C i −− 10 pF II Note. S, Sr: start condition, P: stop condition SCL SDA tSU;STO tr tLOW tSU;DAT tf tHIGH tSU;STA tHD;STA tHD;STA tHD;DAT SS r P tf tr

SEIKO NPC CORPORATION —8 Analog Characteristics Analog input characteristics RL = 300Ω, CH-1 set to clamp input, CH-2 and CH-3 set to bias input, FCDATA = 227, unless otherwise noted. Filter and filter bypass mode frequency characteristics (CH-1, CH-2, CH-3) RL = 300Ω, CH-1 set to clamp input, CH-2 and CH-3 set to bias input, FCDATA = 227, unless otherwise noted. Parameter Symbol Condition Rating Unit Test levelmin typ max Clamp voltage 1 V CLMP1 Clamp input, no signal input, IN1, IN2, IN3 1.80 2.00 2.20 V I Clamp voltage 2 V CLMP2 No signal input, YIN 1.45 1.65 1.85 V I Bias voltage 1 V BIAS1 Bias input, no signal input, IN1, IN2, IN3 2.25 2.45 2.65 V I Bias voltage 2 V BIAS2 No signal input, CIN 2.10 2.30 2.50 V I Input resistance R BIAS Bias input, IN1, IN2, IN3, CIN − 20 − kΩ II Input voltage (CH-1, CH-2, CH-3)*1 *1. This item represents values of maximum input signal amplitude in which the output distortion rate shown in the condition co lumn is filled. When the signal amplitude that exceeds this specification value is input, the output distortion rate is deteriorated. When using this dev ice, the input signal level should be set not to exceed the standard value of the signal amplitude. VAI1 THD < 1.0%, IN1, IN2, IN3 −− 1.4 Vp-p I Input voltage (Y)*1 VAI2 THD < 1.5%, YIN −− 1.4 Vp-p I Input voltage (C)*1 VAI3 THD < 1.5%, CIN −− 1.0 Vp-p I Crosstalk between channels X TLK fin = 1MHz, between each channel – 70 – dB II Parameter Symbol Condition Rating Unit Test levelmin typ max Cutoff frequency FC1 FCDATA = 0 − 4.10 − MHz II FC2 FCDATA = 10 4.99 5.68 6.37 MHz I FC3 FCDATA = 227 31.0 35.3 39.6 MHz I FC4 FCDATA = 255 − 42.7 − MHz II Half fc mode cutoff frequency ratio Rhalf1 Half fc mode, FCDATA = 10 44 49 54 % I Rhalf2 Half fc mode, FCDATA = 227 46 51 56 % I 4fc attenuation G SB fin ≥ 4fc, attenuation from fin = 100kHz − 50 − dB II Filter bypass mode passband*1 *1. The passband that the attenuation from fin = 100kHz is ≤ 1dB. AVB (FBP) – AVB (100kHz) ≥ –1dB FBP Filter bypass mode, VIN = 0.7Vp-p 74.25 80 − MHz II

SEIKO NPC CORPORATION —9 Frequency characteristics (CH-Y/C) RL = 300Ω, unless otherwise noted. Output characteristics (CH-1, CH-2, CH-3) RL = 300Ω, CH-1 set to clamp input, CH-2 and CH-3 set to bias input, FCDATA = 227, unless otherwise noted. Parameter Symbol Condition Rating Unit Test levelMin Typ Max Passband attenuation F PB fin = 6MHz/100kHz – 1.5 0 1.5 dB I Stopband attenuation F SB fin= 27MHz/100kHz 30 40 − dB II Group delay deviation ∆TGD 100kHz to 5MHz − 10 − ns II Parameter Symbol Condition Rating Unit Test levelmin typ max Filter mode output gain 1 A VF1 GS1 = 04h − 0.5 0 0.5 dB I Filter mode output gain 2 A VF2 GS1 = 20h − 2.6 – 2.1 – 1.6 dB I Filter mode output gain 3 A VF3 GS1 = 1Fh 1.6 2.1 2.6 dB I Filter mode gain step width A VFstep – – 0.15 dB I Filter bypass mode output gain 1 A VB1 GS1 = 04h − 0.5 0 0.5 dB I Filter bypass mode output gain 2 A VB2 GS1 = 20h − 2.6 – 2.1 – 1.6 dB I Filter bypass mode output gain 3 A VB3 GS1 = 1Fh 1.6 2.1 2.6 dB I Filter bypass mode gain step width A VBstep – – 0.15 dB I Filter bypass mode gain error dA VBP Gain error between filter mode and bypass mode −± 0.2 − dB I Channel to channel gain error dA VCH −− ± 0.2 dB I Maximum output voltage V out1 THD < 1.0% – 1.4 – Vp-p I Output distortion T HD1 VIN = 1.4Vp-p − 0.2 1.0 % I Drive load resistance R L 1 load = 300Ω− − 1 load I I2C response time T IC Response time from ACK bit output when changing settings using I2C-BUS −− 1 µsI I

SEIKO NPC CORPORATION —10 Output characteristics (CH-Y/C) RL = 300Ω, unless otherwise noted. Reference voltage characteristics VCC = 5.0V , VDD = 3.0 to 5.5V , Ta = 25°C, unless otherwise noted. Test level The definition of “Test Level” shown in the electrical characteristic table is as follows. I : 100% of products tested at Ta = + 25 °C. II : Guaranteed as result of design and characteristics evaluation. Parameter Symbol Condition Rating Unit Test levelmin typ max Output gain 1 A V1 GS2 = 04h − 0.5 0 0.5 dB I Output gain 2 A V2 GS2 = 20h − 2.6 – 2.1 – 1.6 dB I Output gain 3 A V3 GS2 = 1Fh 1.6 2.1 2.6 dB I Output gain step width A Vstep – – 0.15 dB I Y to C gain error dA VYC −− ± 0.2 dB I Maximum output voltage (Y) V out2 YOUT, THD < 1.5% – 1.4 – Vp-p I Maximum output voltage (C) V out3 COUT, THD < 1.5% – 1.0 – Vp-p I Output distortion (Y) T HD2 YOUT, VIN = 1.4Vp-p − 0.2 1.5 % I Output distortion (C) T HD3 COUT, VIN = 1.0Vp-p − 0.2 1.5 % I Drive load resistance R L 1 load = 300Ω− − 1 load I Parameter Symbol Condition Rating Unit Test levelmin typ max REF output voltage V R REF − 2.65 − VI I

SEIKO NPC CORPORATION —11 Evaluation Circuit Diagram Note. This is a circuit only for the evaluation board of an electric characteristics. (It is not a recommended application circuit.) GND3 CIN YIN VCC4 VDD SDA SCL IN1 IN2 IN3 GND1 ISET NC VCC5 GND6 OUT3 VCC2 GND4 YOUT VCC3 COUT GND5 OUT2 VCC1 OUT1 GND2 REF ADS IN1 + 4.7µF YIN + 4.7µF IN3 + 4.7µF IN2 + 4.7µF CIN 0.1µF I C Controller2 100µF 100µF0.1µF 1.8kΩ 10µF 300Ω COUT YOUT OUT2 OUT3 100µF 300Ω 100µF 300Ω 100µF 300Ω OUT1+ 100µF 300Ω

The SM5320A uses an I2C-BUS interface to set the following functions. support a read function (IC is write only). to the SM5320A register stops and the acknowledge signal is not returned. Figure 1. Write sequence address DataA A A Data A P...

SEIKO NPC CORPORATION —13 Slave Address The 7-bit slave address is selected using the ADS pin. When ADS = “L” the address is 48h (1001000b), when ADS = “H” the address is 49h (1001001b), and when ADS = “Z” (open) the address is 4Ah (1001010b). A maximum of three SM5320A devices can be connected to the same I 2C-BUS simultaneously, and controlled independently by setting the slave address of each using the ADS pin. When writing to control register, send sub address of control register following slave address. Control Register The SM5320A has a 4-byte control register. SLAVE ADDRESS for control register write (1st byte) bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 (Hex) 10010000 9 0 h Indicate to write when device's slave address is 48h (ADS = "L") 10010010 9 2 h Indicate to write when device's slave address is 49h (ADS = "H") 10010100 9 4 h Indicate to write when device's slave address is 4Ah (ADS = "Z") SUB ADDRESS for control register write (2nd byte) bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 (Hex) 00000000 0 0 h Indicate to write control register 00h 00000001 0 1 h Indicate to write control register 01h 00000010 0 2 h Indicate to write control register 02h 00000011 0 3 h Indicate to write control register 03h Sub Addr. Register assign default bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 (Hex) 00h FCM FC6 FC5 FC4 FC3 FC2 FC1 FC0 00h OUT1 to OUT3 fc control 01h CB5 CB4 CB3 CB2 CB1 CB0 BYP – 00h OUT1 to OUT3 input method and filter bypass setting 02h PD HALF GS15 GS14 GS13 GS12 GS11 GS10 00h OUT1 to OUT3 gain control 03h – – GS25 GS24 GS23 GS22 GS21 GS20 00h YOUT, COUT gain control

SEIKO NPC CORPORATION —14 Flag settings (1) Cutoff frequency Register name: FCM, FC Address: Sub address = 00h, bit7 to bit0 (2) Input type switching (sync-tip clamp, bias) Register name: CB Address: Sub address = 01h, bit7 to bit2 Sets the input method of IN1, IN2, IN3. FCDATA FCSET Flag name Cutoff frequency [MHz] Default FCM FC6 FC5 FC4 FC3 FC2 FC1 FC0 0 0 0 h 00000000 4.10 1 0 1 h 00000001 4.26 2 0 2 h 00000010 4.42 1 2 5 7 D h 01111101 22.5 1 2 6 7 E h 01111110 22.7 1 2 7 7 F h 01111111 22.8 1 2 8 8 0 h 10000000 7.53 1 2 9 8 1 h 10000001 7.83 1 3 0 8 2 h 10000010 8.12 2 5 3 F D h 11111101 42.2 2 5 4 F E h 11111110 42.5 2 5 5 F F h 11111111 42.7 Control register Sub address 01h INPUT bit7 bit6 bit5 bit4 bit3 bit2 IN1 IN2 IN3 * 0 Clamp IN1: sync-tip clamp input (default) * 1 Bias IN1: bias input * 0 Clamp IN2: sync-tip clamp input (default) * 1 Bias IN2: bias input * 0 Clamp IN3: sync-tip clamp input (default) * 1 Bias IN3: bias input

SEIKO NPC CORPORATION —15 (3) Power-down mode select Register name: PD Address: Sub address = 02h, bit7 Sets the normal operation or power-down mode. (4) fc mode switching (1/2 cutoff frequency switching) Register name: HALF Address: Sub address = 02h, bit6 Sets the standard fc mode or half fc mode. (5) Filter bypass mode Register name: BYP Address: Sub address = 01h, bit1 Sets the use or nonuse of filter. Control register Sub address 02h Description bit7

0 Normal operation (default)

1 Power-down mode. Current consumption: ≤ 500µA Control register Sub address 02h Description bit6 0 Standard fc mode. OUT1, OUT2, OUT3 cutoff frequency is identical. (default) 1 Half fc mode. OUT2, OUT3 cutoff frequency is 1/2 that of OUT1. Control register Sub address 01h Description bit1 0 Filter mode. The signals is output to OUT1, OUT2, OUT3 passing through filter. (default) 1 Filter bypass mode. The signals is output to OUT1, OUT2, OUT3 without passing through filter.

SEIKO NPC CORPORATION —16 (6) Output gain setting Register name: GS1 Address: Sub address = 02h, bit5 to bit0 Sets the output gain of OUT1, OUT2, OUT3. Register name: GS2 Address: Sub address = 03h, bit5 to bit0 Sets the output gain of YOUT, COUT. Control register Sub address 02h OUT1, OUT2, OUT3 gain control bit5 bit4 bit3 bit2 bit1 bit0 (HEX) (DEC) 100000 2 0 h – 3 2 – 2.10dB 100001 2 1 h – 3 1 – 2.05dB 100010 2 2 h – 3 0 – 2.00dB 111110 3 E h – 2 – 0.35dB 111111 3 F h – 1 – 0.28dB 000000 0 0 h 0– 0.21dB (default) 000001 0 1 h 1 – 0.15dB 000010 0 2 h 2 – 0.10dB 000011 0 3 h 3 – 0.05dB 000100 0 4 h 4 ± 0.00dB 011101 1 D h 2 9 + 1.94dB 011110 1 E h 3 0 + 2.02dB 011111 1 F h 3 1 + 2.10dB Control register Sub address 03h YOUT, COUT gain control bit5 bit4 bit3 bit2 bit1 bit0 (HEX) (DEC) 100000 2 0 h – 3 2 – 2.10dB 100001 2 1 h – 3 1 – 2.05dB 100010 2 2 h – 3 0 – 2.00dB 111110 3 E h – 2 – 0.35dB 111111 3 F h – 1 – 0.28dB 000000 0 0 h 0– 0.21dB (default) 000001 0 1 h 1 – 0.15dB 000010 0 2 h 2 – 0.10dB 000011 0 3 h 3 – 0.05dB 000100 0 4 h 4 ± 0.00dB 011101 1 D h 2 9 + 1.94dB 011110 1 E h 3 0 + 2.02dB 011111 1 F h 3 1 + 2.10dB

FCDATA data. The cutoff frequency vs. FCDATA values are listed in table 1, and shown graphically in figure 2. Table 1. Cutoff frequency vs. FCDATA (RISET = 1.8kΩ)

1.8kΩ. In power-down mode and filter bypass mode, no current flows into RISET. maximum rating for the package. nal (Cr, Cb) requirements as in component signals. between CH-1 and CH-2/CH-3 varies. quency is 80MHz (typ), which can support SXGA-class signals. their default settings. At power-ON, all supplies should be applied simultaneously. ommended for stability of movement. Figure 2. Cutoff frequency vs. FCDATA (RISET = 1.8kΩ)

large external spikes or other noise invaded from outside. The recommended value is 10kΩ. 250mV as compared with voltage of analog one. Figure 3. Slave address 4Ah setting

SEIKO NPC CORPORATION —23 NC0608AE 2007.02 Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further te sting or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any ent ity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are req uested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan Telephone: +81-3-6667-6601 Facsimile: +81-3-6667-6611 http://www.npc.co.jp/ Email: sales @npc.co.jp