CPC7582
Table 9. Truth Table
Input
Access
TSD
Tip Break
Switch
Ring
Break
Switch
Ringing
Return
Switch
Ring
Switch
Tip
Access
Switch
Ring
Access
Switch
0V
5V
0V
5V
Don’t
Care
1 Idle/Talk State
0V
0V
5V
5V
Don’t
Care
5V/Float5
5V/Float5
5V/Float5
5V/Float5
0V6
On
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
On
Off
Off
Off1
Off2
On3
Off4
Off4
2 Power Ringing State
3 Test out message waiting state.
4 All OFF State
5 If TSD = 5V, the thermal shutdown mechanism is disabled.
If TSD if floating, the thermal shutdown mechanism is active.
6 Forcing TSD to ground overrides the logic input pins and forces an all off state.
Package Pinout
CPC7582
Pin
1
Name
Function
Fault ground
1
16
SCR
and
Trip
FGND
TBAT
FGND
TBAT
VBAT
RBAT
2
Connect to TIP on SLIC side
Connect to TIP on line side
2
3
4
15
14
13
Circuit
3
TLINE
TRING
SW1
SW2
TLINE
RLINE
RRING
4
Connect to return ground for ringing
generator
TRING
SW3
SW5
SW4
SW6
5
5
6
7
TACCESS
VDD
Test access
+5V supply
12
TACCESS
RACCESS
6
7
8
11
10
9
VDD
LATCH
INRING
TSD
Temperature shutdown pin. Can be
used as a logic level input or output.
See Tables 6, 7 and 9 for more
details. As an output, will read +5V
when device is in its operational mode
and 0V in the thermal shutdown mode.
To disable the thermal shutdown
mechanism, tie this pin to +5V
(NOT Recommended).
TSD
DGND
INACCESS
* Only the CPC7582BA contains the protection SCR.
8
9
DGND
INACCESS
INRING
Digital ground
Logic level switch control
Logic level input switch control
10
11
LATCH
Data latch control, active high,
transparent low
12
13
14
15
16
RACCESS
RRING
RLINE
RBAT
Test access
Connect to ringing generator
Connect to RING on line side
Connect to RING on SLIC side
VBAT
Battery voltage. Used as a reference
for protection circuit
Rev. 1.0
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