ISDN Dual Telephony Protocol Engine
CMX208
S1 Package
80QFP
Pin No.
56
57
58
Signal
Description
Name
RINGP1
RINGN1
CLIP1
Type
O/P
O/P
O/P
POTS Port 1 Ringing Generator (low when not ringing)
POTS Port 1 Ringing Generator (high when not ringing)
POTS Port 1 Line Voltage Adjustment (low if sending
FSK to a Caller Display unit, as it is intended to make
the SLIC present a high impedance to the POTS line)
POTS Port 1 Hook Switch Status Detector
(on-hook = low)
POTS Port 2 Hook Switch Status Detector
(on-hook = low)
CMX605 C-BUS Interface - Reply Data
CMX605 C-BUS Interface - Command Data
CMX605 C-BUS Interface - Serial Clock
The positive analogue supply rail. Levels and voltages
are dependent upon this supply. This pin should be
decoupled to AV
SS
by a capacitor
A/D Reference Voltage. Connect to AV
DD
directly
The negative analogue supply rail (ground)
CMX605 C-BUS Interface (chip select POTS Port 1)
CMX605 C-BUS Interface (chip select POTS Port 2)
D/A Reference Voltage. Connect to AV
DD
directly
D/A Reference Voltage. Connect to AV
SS
directly
For manufacturer's use only. Connect to DV
SS
directly
API Interrupt (inactive = high)
CMX605 C-BUS Interface - Interrupt (inactive = high)
For manufacturer’s use only. Connect to DV
SS
directly
For manufacturer’s use only. Connect to DV
SS
directly
For manufacturer’s use only. Connect to DV
SS
directly
ISDN S-interface Chip Interrupt
59
60
61
62
63
64
ILINE1
ILINE2
REPLY
CMD-
DATA
SER-CLK
AV
DD
AV
REF1
AV
SS
CSN1
CSN2
AV
REF2
AV
REF3
NMI
API-INT
IRQN
~
∼
∼
I/P
I/P
I/P
O/P
O/P
Power
65
66
67
68
69
70
71
72
73
74
75
76
77
Power
Power
O/P
O/P
Power
Power
I/P
I/P
I/P
I/P
I/P
I/P
I/P
ISDNINT
©
1999
Consumer Microcircuits Limited
©
1999
Chiron Technology Limited
6
D/208/1
CMLMICRO [ CML MICROCIRCUITS ]
