Panasonic KX-MB283BR, Service Manual

Page: 138 / 240

138
KX-MB283BR
IC750 ( C1CB00002227 : 3.3V Single Power Supply) Pin Description
Pin No Signal Name Input/Output(*) Description
1 MDIO I/O Management Independent Interface ( MII ) Data I/O
2 MDC I MII Clock Input
3 RXD3/PHYAD1 Ipd /O MII Receive Data Output
4 RXD2/PHYAD2 Ipd /O MII Receive Data Output
5 RXD1/PHYAD3 Ipd /O MII Receive Data Output
6 RXD0/PHYAD4 Ipd /O MII Receive Data Output
7 VDDIO - Digital IO 2.5V/3.3V tolerance power supply
8 GND - Ground
9 RXDV/
CRSDV/
PCS_LPBK
Ipd /O MII Receive Data Valid Output
10 RXC O MII Receive Clock Output
11 RXER/ISO Ipd /O MII Receive Error Output
12 GND - Ground
13 VDDC - Digital core 2.5V only power supply
14 TXER Ipd MII Transmit Error Input
15 TXC/REFCLK I/O MII Transmit Clock Output / RMII(Reduced MII) Reference Clock Iunput
16 TXEN Ipd MII Transmit Enable Input
17 TXD0 Ipd MII Transmit Data Input
18 TXD1 Ipd MII Transmit Data Input
19 TXD2 Ipd MII Transmit Data Input
20 TXD3 Ipd MII Transmit Data Input
21 COL/RMII Ipd /O MII Collision Detect Output
22 CRS/RMII_BTB Ipd /O MII Carrier Sense Output
23 GND - Ground
24 VDDIO - Digital IO 2.5V/3.3V tolerance power supply
25 INT#/
PHYAD0
Ipu/O Management Interface ( MII ) Interrupt Out
26 LED0/TEST Ipu/O Link/Activity LED Output
27 LED1/ SPD100/
nFEF
Ipu/O Speed LED Output
28 LED2/DUPLEX Ipu/O Full-duplex LED Output
29 LED3/NWAYEN Ipu/O Collision LED Output
30 PD# Ipu Power Down 1= Normal operation 0=Power-down.
31 VDDRX - Analog 2.5V power supply
32 RX- I Receive Input
33 RX+ I Receive Input
34 FXSD/FXEN Ipd/O Fiber Mode Enable/Signal Detection in Fiber Mode
35 GND - Ground
36 GND - Ground
37 REXT I External resister(6.49k
Ω
) connects to REXT and GNDRX
38 VDDRCV - 2.5V power output of voltage regulator.
39 GND - Ground
40 TX- O Transmit Outputs
41 TX+ O Transmit Outputs
42 VDDTX Transmitter 2.5V power supply
43 GND - Ground