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