WJLXT971ALE.A4-857346 Cortina Systems Inc, WJLXT971ALE.A4-857346 Datasheet - Page 20

• Manufacturer Part Number: WJLXT971ALE.A4-857346
• Manufacturer: Cortina Systems Inc

Specifications of WJLXT971ALE.A4-857346

• Lead Free Status / RoHS Status: Compliant

LXT971A PHY
Datasheet
249414, Revision 5.2
13 September 2007
Table 7
Table 8
Table 9
Cortina Systems
Network Interface Signal Descriptions
Standard Bus and Interface Signal Descriptions
Configuration and LED Driver Signal Descriptions (Sheet 1 of 2)
®
Note:
PBGA
PBGA
LXT971A Single-Port 10/100 Mbps PHY Transceiver
Pin#
Pin#
PBGA
Pin#
H2
H3
H4
H5
G2
G1
F1
F2
E2
E1
Implement 10 kΩ pull-up/pull-down resistors if LEDs are not used in the design.
LQFP
LQFP
Pin#
Pin#
19
20
23
24
26
16
15
14
13
12
LQFP
Pin#
SD/TP_L
Symbol
Symbol
TPFOP
TPFON
ADDR0
TPFIP
TPFIN
Symbol
Type
Type
O
I
I
I
I
I
I
I
Type
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.
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.
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.
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.
Address.
Sets device address.
• Twisted-pair mode - Connect SD/TP_L Low
• Fiber mode - Connect SD/TP_L High (register bit 16.0 = 1).
(register bit 16.0 = 0).
Signal Description
Signal Description
Signal Description
4.0 Signal Descriptions
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