Panasonic KX-TD612NE, Service Manual

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Pin No. Pin Name I/O Function Operation
22 DDRCSN O Doorphone / Door Opener Card
Select H: negate, L: assert
21 UCDCSN O Message Card Select H: negate, L: assert
20 USBCSN O (Reserved) -
19 USBINTN I (Reserved) -
18 25HZ O 25Hz Bell Signal Output -
17 DCALARM I DC power down detection H: normal, L: power down
16 SYSTEM CLEAR I System Clear input H: normal, L: system clear
15 SYSTEM RESET I System Reset input H: normal, L: system reset
177 AD7 I/O Address / Data 7 (not used)
175 AD6 I/O Address / Data 6 (not used)
174 AD5 I/O Address / Data 5 (not used)
173 AD4 I/O Address / Data 4 (not used)
172 AD3 I/O Address / Data 3 (not used)
171 AD2 I/O Address / Data 2 (not used)
170 AD1 I/O Address / Data 1 (not used)
169 AD0 I/O Address / Data 0 (not used)
186 S0CLK#1 I ISDN port 1 Clock -
185 S0CLK#0 I ISDN port 1 Clock -
184 ICLK O ISDN Clock -
183 IFH1 O ISDN Frame Head Pulse -
181 INT I ISDN Chip interrupt H: normal, L: interrupt
180 S0CSNMA O ISDN Chip Select 1 H: negate, L: assert
179 S0CSN#0 O ISDN Chip Select 0 H: negate, L: assert
178 ALE O (Reserved) -
35 DREADY I Door-phone Ready H: connected, L: not connected
34 DHOOK I Door-phone hook detection H: on-hook, L: off-hook
33 DRPDN O CODEC(for Door-phone) power
control H: power on, L: power
32 SD2 I DTMF Receiver 2 data output -
31 SD1 I DTMF Receiver 1 data output -
30 ACK2 O DTMF Receiver 2 data shift
pulse out -
29 ACK1 O DTMF Receiver 1 data shift
pulse out -
28 LED O LED Control H: LED on, L: LED off
43 STD2 I DTMF Receiver 2 data valid H: data valid, L: data not
42 STD1 I DTMF Receiver 1 data valid H: data valid, L: data not
41 MOH/PAG PDN O CODEC (MOH/PAG) Power
Control H: power on, L: power
40 MU/AN O -low/A-low Control H: -low, L: A-low
39 SRELAY O Secondary Ringer relay H: relay on, L: relay off
38 ERELAY O External relay H: relay on, L: relay off
37 DOPEN O Door Opener H: relay on, L: relay off
36 DBUSY O Door Phone Power Control H: power on, L: power
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