CPC75282
1.11 Truth Tables
1.11.1 Operating States: CFG=0
Break
Switches
Ringing
Switches
Test
Switches
1
State
Idle/Talk
P3
P2
P1
OFF
x
1
0
0
0
0
1
1
1
1
x
0
0
1
1
0
0
1
1
x
0
1
0
1
0
1
0
1
x
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
Test
1
1
1
1
1
1
1
Ringing
OFF
ON
Test/Monitor
Idle/Talk
OFF
OFF
OFF
ON
ON
OFF
ON
Test/Monitor
Ringing
ON
OFF
OFF
OFF
OFF
ON
Test Ringing
ON
2
All-Off
OFF
OFF
0
1
P1, P2, and P3 data input values are directed to a given channel when the respective LATCH logic signal is set to “0.”
x
OFF is a per-channel control.
x
2
3
A “0” on OFF resets the CPC75282, the device will remain in the All-Off state until OFF is returned to “1” and the next LATCH signal is
x
applied.
x
x
CFG is fixed at D ; if CFG switches states when V is applied, the change will be recognized by a given channel after a LATCH low
DD
GND
transition is applied to that channel.
1.11.2 Operating States: CFG=1
Break
Switches
Ringing
Switches
Test
Switches
1
State
P3
P2
P1
OFF
x
1
Idle/Talk
Test
0
0
0
0
1
1
1
1
x
0
0
1
1
0
0
1
1
x
0
1
0
1
0
1
0
1
x
ON
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
1
1
1
1
1
1
1
Ringing
All-Off
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
Idle/Talk
Test/Monitor
Ringing
Test Ringing
All-Off
ON
OFF
OFF
OFF
OFF
ON
ON
2
OFF
OFF
0
1
P1, P2, and P3 data input values are directed to a given channel when the respective LATCH logic signal is set to “0.”
x
OFF is a per-channel control.
x
2
3
A “0” on OFF resets the CPC75282, the device will remain in the All-Off state until OFF is returned to “1” and the next LATCH signal is
x
applied.
x
x
CFG is fixed at v ; if CFG switches states when V is applied, the change will be recognized by a given channel after a LATCH low
DD
DD
transition is applied to that channel.
R00D
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