KS8721BL MICREL | Alldatasheet
Document overview
- Manufacturer or author: labinee
- PDF pages: 2
Technical content
solution for 10BASE-T, 100BASE-TX, and 100BASE-FX applications. For additional information, contact your local Micrel Field Application Engineer or salesperson. Adaptive EQ Baseline Wander Correction MLT3 Decoder NRZI/NRZ 10BASE-T Receiver Transmitter TX+ TX– RX+ RX– PLL XI XO
Description
The KS8721BL/SL is a 10BASE-T, 100BASE-TX, and 100BASE-FX physical layer transceiver providing MII/ RMII interfaces to MACs and switches. Using a unique mixed-signal design that extends signaling distance while reducing power consumption, the KS8721BL/SL repre- sents Micrel’s fourth generation single-port Fast Ethernet PHY. Micrel’s architecture dissipates an ultra-low 275mW in power, including transmit output drivers. This translates to increased reliability while enabling deployment in today’s power-sensitive applications. Multiple power-down modes, accessed via configuration pins or registers, allow further levels of power saving through manual selection or auto- matic detection of cable energy. www.micrel.com Block Diagram 3.3V 10/100BASE-TX/FX Physical Layer Transceiver The KS8721BL/SL automatically configures itself for 100Mbps or 10Mbps and full- or half-duplex operation, using an on-chip auto-negotiation algorithm. Combined with Auto MDI/MDIX for automatic correction and detec- tion of crossover and straight-through cables, the KS8721BL/SL provides an easy-to-use, high performance solution for 10BASE-T, 100BASE-TX, and 100BASE-FX applications. For additional information, contact your local Micrel Field Application Engineer or salesperson. KS8721BL/SL Product Brief
HTTP:// www.micrel.com
Features
- Single chip 10BASE-T, 100BASE-TX, and
- Supports back-to-back operation for copper-to-fiber media 100BASE-FX physical layer solution converter applications.
- Fully compliant to IEEE802.3u standards
- Designed to operate with link partners at all speeds.
- Low-power CMOS design, power consumption
- Increased reliability, greater range of power-sensitive < 275mW (including output driver current) applications.
- Supports media independent interface (MII) and
- Flexible switch/MAC interfacing options. Optimized pin count reduced MII (RMII) interfaces lower cost through reduced trace/simplified routing.
- Delivers robust operation (130 meters+)
- Operation over the widest variety of cabling plants.
- Furnishes Auto MDI/MDI-X
- Automatic detection and correction for straight-through or crossover cables.
- Offers both power-down and power-saving modes
- Automatically shuts down upon cable removal extending battery life for mobile applications.
- Single 3.3V power supply
- Easy migration from earlier KS8721B/BT family members.
- Configurable through MII serial management ports or
- Programmable in environments with and without CPU. via external control pins
- Available in lead-free and industrial temperature versions
- Environmentally friendly and rugged.
- Offered in flexible package options
- KS8721BL in 48-pin LQFP for space-constrained and KS8721SL in mainstream 48-pin SSOP. Stock Code: M1016-070604 Location Address Telephone Fax Corporate HQ
1849 Fortune Drive
San Jose, CA 95131 USA +1 (408) 944-0800 +1 (408) 474-1000 Eastern USA
93 Branch Street
Medford, NJ 08055 USA +1 (609) 654-0078 +1 (609) 546-0989 Central USA 722 S. Denton Tap Suite 130 Coppell, TX 75019 USA +1 (972) 393-2533 +1 (972) 393-2540 Western USA
2180 Fortune Drive
San Jose, CA 95131 USA +1 (408) 944-0800 +1 (408) 914-7878 China Room 712, Block B, Intl. Chamber of Commerce Bldg., Fuhua Rd 1, Futian ShenZhen, PR China 518026 +86 (755) 8302-7618 +86 (755) 8302-7637 Korea 4F, KTB Building, 826-14, Yeoksam-dong, Kangnam-ku Seoul 135-080 Korea +82 (2) 3466-3000 +82 (2) 3466-2999 Taiwan 4F, No. 18, Lane 321, Yang-Guang Street, Nei-Hu Chu Taipei, 11475 Taiwan, R.O.C. +886 (2) 8751-0600 +886 (2) 8751-0746 Singapore 8 Temasek Blvd., #42-01 Suntec Tower Three Singapore 038988 +65-6832-7692 +65-6832-7693 Japan 1-16-15 Dogenzaka, Shibuyaku Tokyo 150-0043 Japan +81 (3) 5428-0871 +81 (3) 5428-0872 Europe 1st Floor, 3 Lockside Place, Mill Lane Newbury, Berks RG14 5QS UK +44 1635 524455 +44 1635 524466 Western Europe 10, avenue du Quebec, Villebon BP116 Courtaboeuf Cedex 91944 France Contact Micrel Semiconductor Contact Micrel Semiconductor Contact Micrel Semiconductor Contact Micrel Semiconductor Contact Micrel Semiconductor
Applications
Media Converter Application Network Printer Application KS8721BL/SL Fast Ethernet PHY Print Engine ASIC RJ-45 with Integrated Magnetics MII/ RMII KS8721BL/SL Fast Ethernet PHY RJ-45 with Integrated Magnetics RMII KS8721BL/SL Fast Ethernet PHY Fiber Module