CS8952T Datasheet, PDF (1/86 Pages) Cirrus Logic – 100BASE E-X AND 10BASE-T TRANSCEIVER

CS8952T
Advanced Product Databook
FEATURES
! Single-Chip IEEE 802.3 Physical Interface IC for
100BASE-TX and 10BASE-T
! Adaptive Equalizer provides Extended Length Opera-
tion with Superior Noise Immunity and NEXT Margin
! Extremely Low Transmit Jitter (<400 ps)
! Low Common Mode Noise on TX Driver for Reduced
EMI Problems
! Integrated RX and TX Filters for 10BASE-T
! Compensation for Back-to-Back “Killer Packets”
! Digital Interfaces Supported
— Media Independent Interface (MII) for 100BASE-X and
10BASE-T
— Repeater 5-bit code-group interface (100BASE-X)
— 10BASE-T Serial Interface
! Register Set Compatible with DP83840A
! IEEE 802.3 Auto-Negotiation with Next Page Support
! Six LED drivers (LNK, COL, FDX, TX, RX, and SPD)
! Low power (135 mA Typical) CMOS design operates
on a single 5 V supply
CrystalLAN™ 100BASE-X
and 10BASE-T Transceiver
DESCRIPTION
The CS8952T uses CMOS technology to deliver a high-per-
formance, low-cost 100BASE-X/10BASE-T Physical Layer
(PHY) line interface. It makes use of an adaptive equalizer op-
timized for noise and near end crosstalk (NEXT) immunity to
extend receiver operation to cable lengths exceeding 160 m.
In addition, the transmit circuitry has been designed to pro-
vide extremely low transmit jitter (<400 ps) for improved link
partner performance. Transmit driver common mode noise
has been minimized to reduce EMI for simplified FCC
certification.
The CS8952T incorporates a standard Media Independent In-
terface (MII) for easy connection to a variety of 10 and
100 Mb/s Media Access Controllers (MACs).
ORDERING INFORMATION
CS8952T-CQ 0 to 70 °C 100-pin TQFP
CS8952T-IQ -40 to 85 °C 100-pin TQFP
CDB8952
Evaluation Board
TX_EN
TX_ER/TXD4
TXD[3:0]
TX_CLK
CS8952T 10BaseT/100Base-X
Transceiver
Manchester
Encoder
4B/5B
Encoder
Scrambler
MLT-3
Encoder
10BaseT
Filter
10/100
Slew Rate
Control
TX+/-
MDC
MII_IRQ
MDIO
CRS
COL
RX_ER/RXD4
RX_DV
RXD[3:0]
RX_CLK
RX_EN
DS206TPP2
10/100
4B/5B
Decoder
Descrambler
MLT-3
Decoder
Manchester
Decoder
MII
Control/Status
Registers
Link
Management
Timing
Recovery
100BaseT
Slicer
Adaptive Eq. &
Baseline Wander
Compensation
10BaseT
Slicer
10BaseT
Filter
Auto
Negotiation
LED
Drivers
RX+/-
LED1
LED2
LED3
LED4
LED5
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
Copyright  Cirrus Logic, Inc. 2001
(All Rights Reserved)
OCT ‘01