KX-NT543RU, KX-NT543RU-B, KX-NT546RU, KX-NT546RU-B (serv.man2) - Panasonic PBX Service Manual (repair manual). Page 68

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68
KX-NT543RU/KX-NT543RU-B/KX-NT546RU/KX-NT546RU-B
33
SCOL3
I/O
MAC collision detection
34
SCRS3
I/O
MAC carrier sense
35
*INTRN
Opu
Not in use
36
SCL_MDC
I/O
MAC MII control clock
37
SDA_MDIO
I/O
MAC MII control data
38
SPIQ
lpd/O
Not in use
39
*SPISN
I
Not in use
40
VDDIO2
P
Digital system power supply (3.3V)
41
GND
Gnd
Digital system ground
42
VDDCO
P
Digital system power output (1.8V)
43
P1LED1
Ipu/O
Not in use
44
P1LED0
Ipd/O
Not in use
45
P2LED1
Ipu/O 
Not in use
46
P2LED0
Ipu/O 
Not in use
47
*RSTN
Ipu
Reset
48
FXSD1
Gnd 
Not in use
Pin No.
Terminal Name
Function
I/O Setting
Contents of Control
Remark
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