参数资料
型号: WJLXT972MLC.A4-864101
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP48
封装: ROHS COMPLIANT, LQFP-48
文件页数: 13/99页
文件大小: 1526K
代理商: WJLXT972MLC.A4-864101
Page 20
Cortina Systems LXT971A Single-Port 10/100 Mbps PHY Transceiver
LXT971A PHY
Datasheet
249414, Revision 5.2
13 September 2007
4.0 Signal Descriptions
Table 7
Network Interface Signal Descriptions
PBGA
Pin#
LQFP
Pin#
Symbol
Type
Signal Description
H2
H3
19
20
TPFOP
TPFON
O
Twisted-Pair/Fiber Outputs, Positive and Negative.
During 100BASE-TX or 10BASE-T operation, TPFOP/N pins drive
IEEE 802.3 compliant pulses onto the line.
During 100BASE-FX operation, TPFOP/N pins produce differential
LVPECL outputs for fiber PHYs.
H4
H5
23
24
TPFIP
TPFIN
I
Twisted-Pair/Fiber Inputs, Positive and Negative.
During 100BASE-TX or 10BASE-T operation, TPFIP/N pins receive
differential 100BASE-TX or 10BASE-T signals from the line.
During 100BASE-FX operation, TPFIP/N pins receive differential
LVPECL inputs from fiber PHYs.
G2
26
SD/TP_L
I
Signal Detect / Twisted Pair.
SD/TP_L acts as a dual-function input, depending on theLXT971A
PHY mode.
Normal, Reset, and Power-Up Operations.
“Normal” operation is operation other than reset or power-up. In
either reset or power-up, SD/TP_L is used to select one of the two
following media modes.
Twisted-pair mode - Connect SD/TP_L Low
(register bit 16.0 = 0).
Fiber mode - Connect SD/TP_L High (register bit 16.0 = 1).
Twisted-Pair Mode.
For normal operation that uses the twisted-pair mode, connect SD/
TP_L to ground.
Fiber Mode.
For normal operation that uses the fiber mode, SD/TP_L acts as the
SD input from the fiber PHY.
Table 8
Standard Bus and Interface Signal Descriptions
PBGA
Pin#
LQFP
Pin#
Symbol
Type
Signal Description
G1
F1
F2
E2
E1
16
15
14
13
12
ADDR0
I
Address.
Sets device address.
Table 9
Configuration and LED Driver Signal Descriptions (Sheet 1 of 2)
PBGA
Pin#
LQFP
Pin#
Symbol
Type
Signal Description
Note:
Implement 10 k
Ω pull-up/pull-down resistors if LEDs are not used in the design.
相关PDF资料
PDF描述
WJLXT972MLC.A4-864115 DATACOM, ETHERNET TRANSCEIVER, PQFP48
WJLXT972MLC.A4SE001 DATACOM, ETHERNET TRANSCEIVER, PQFP48
WJLXT972MLC.A4SE000 DATACOM, ETHERNET TRANSCEIVER, PQFP48
WJLXT972MLC.A4SE001 DATACOM, ETHERNET TRANSCEIVER, PQFP48
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