CPC7592 Datasheet, PDF (10/20 Pages) Clare, Inc. – Line Card Access Switch

CPC7592
1.10 Truth Tables
1.10.1 CPC7592xA and CPC7592xB Truth Table
State
IN_RINGING
IN_TEST
LATCH
T_SD
Break
Switches
Talk
0
0
On
Test
Ringing
0
1
Off
1
0
0
Z¹
Off
All-Off
1
1
Off
Latched
X
X
1
All-Off
X
X
X
0
Off
1 _{Z = High Impedance. Because TSD has an internal pull up at this pin, it should be controlled with an open-collector or open-drain type device.}
1.10.2 CPC7592xC Truth Table
State
IN_RINGING
IN_TEST
LATCH
T_SD
Break
Switches
Talk
0
0
On
Test/Monitor
0
1
On
Ringing
1
0
0
Z¹
Off
Ringing Test
1
1
Off
Latched
X
X
1
All-Off
X
X
X
0
Off
1 _{Z = High Impedance. Because TSD has an internal pull up at this pin, it should be controlled with an open-collector or open-drain type device.}
Ringing
Switches
Off
Off
On
Off
Unchanged
Off
Ringing
Switches
Off
Off
On
On
Unchanged
Off
Test
Switches
Off
On
Off
Off
Off
Test
Switches
Off
On
Off
On
Off
10
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