Panasonic KX-TA308 Service Manual page 37

17.2 BIT CPU (IC304) I/O PORT MAP
TOP PREVIOUS NEXT
PIN NO PORT PIN NAME I/O
TOP PREVIOUS NEXT
32 P00 SD3 I DISA1 DTMF SIGNAL
31 P01 SD4 I DISA2 DTMF SIGNAL
30 P02 SD1 I DTMFR1 SIGNAL
29 P03 SD2 I DTMF2 SIGNAL
37 P10 CINT I CPR INTERRUPT
36 P11 CREQ I CPR COMMUNICATE REQUEST
35 P12 PRX1 I RECEIVE DATA FROM PITS (01-08)
33 P13 PRX2 I RECEIVE DATA FROM PITS (09-16)
43 P20 620Hz O 620Hz SIGNAL
42 P21 350Hz O 350Hz SIGNAL
41 P22 PTX1 O SEND DATA FROM PITS (01-08)
40 P23 CACK O CPR ACK SIGNAL
26 P30 ACK1 O ACK FROM DTMFR1
25 P31 ACK2 O ACK FROM DTMFR2
24 P32 ACK3 O ACK FROM DISA1
23 P33 ACK4 O ACK FROM DISA2
16 P40 - O -
15 P41 PA O ANALOGUE SW A
14 P42 PB O ANALOGUE SW B
13 P43 PC O ANALOGUE SW C
11 P50 STD3 I DTMF SIGNAL DETECT DISA1
10 P51 STD4 I DTMF SIGNAL DETECT DISA2
9 P52 STD1 I DTMF SIGNAL DETECT DTMFR1
8 P53 STD2 I DTMF SIGNAL DETECT DTMFR2
7 P60 CRXD0 O CPR RECEIVE DATA
6 P61 CRXD1 O CPR RECEIVE DATA
5 P62 CRXD2 O CPR RECEIVE DATA
4 P63 CRXD3 O CPR RECEIVE DATA
3 P70 CTXD0 I CPR SEND DATA
2 P71 CTXD1 I CPR SEND DATA
1 P72 CTXD2 I CPR SEND DATA
44 P73 CTXD3 I CPR SEND DATA
28 P80 PCLR O DATA CLEAR
27 P81 PTX2 O SEND DATA FROM PITS (09-16)
http://servis-manual.com/
FUNCTION ACTIVE
L:ACTIVE
L:ACTIVE
L:ACTIVE
L:ACTIVE
L:ACTIVE
L:ACTIVE
L:ACTIVE
H:ACTIVE
L:ACTIVE
H:ACTIVE
H:ACTIVE
L:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
H:ACTIVE
L:ACTIVE
H:ACTIVE