參數(shù)資料
型號: AM79C850KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: SUPERNET-R 3
中文描述: 1 CHANNEL(S), 100M bps, FDDI CONTROLLER, PQFP208
封裝: PLASTIC, QFP-208
文件頁數(shù): 34/97頁
文件大?。?/td> 358K
代理商: AM79C850KCW
AMD
P R E L I M I N A R Y
34
SUPERNET 3
MAC
Rx
Tx
RXAFU 3:0, RXAFL 3:0, RXAFCU, RXAFCL
PHY A
PHY B
PDTR
RX+, RX–
TX+, TX–
X9:0
R9:0
19574A-8
PDTR: Phy Data Transmit and Receive Functions
SUPERNET 3
Figure 7. WRAP_B Configuration
MAC
Rx
Tx
RXAFU 3:0, RXAFL 3:0, RXAFCU, RXAFCL
PHY A
PDTR
RX+, RX–
TX+, TX–
X9:0
R9:0
19574A-9
PDTR: Phy Data Transmit and Receive Functions
DAS/SAS Selection Mux
SUPERNET 3
Figure 8. WRAP_S or SAS Configuration
Changes and Enhancements to PHY
Changes from SUPERNET 2 PLC
Addition of Scrambler/Descrambler
Scrambler/descrambler is implemented. Scrambling/
descrambling can be disabled either through a pin or
through bit 0 in the PLC_CNTRL_C register.
ENCOFF pin function changed
The function of this pin has changed slightly. In addition
to turning off the Encoder (as in SUPERNET 2 PLC), this
pin, when asserted, now also turns off the Decoder.
BIST enhanced
The Built-In Self Test (BIST) test now covers part of the
Elasticity Buffer and Framer logic.
Revision Identification
In
SUPERNET
PLC_STATUS_A register will indicate 01111 on a read
operation. The Revision ID for SUPERNET 2 PLC-S
is 11111.
3
PHY,
bits
15:11
of
the
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