LUCL9219AAR-D AGERE [Agere Systems], LUCL9219AAR-D Datasheet - Page 6

• Manufacturer Part Number: LUCL9219AAR-D
• Description: Low-Cost Line Interface with Reverse Battery and Dual Current Limit
• Manufacturer: AGERE [Agere Systems]

L9219A/G Low-Cost Line Interface
with Reverse Battery and Dual Current Limit
Functional Description
Table 2. Input State Coding
Table 3. Supervision Coding
6
0 = off-hook or ring trip.
1 = on-hook and no ring trip.
B0
1
1
1
1
0
0
0
0
B1
1
0
1
0
1
0
0
1
B2
1
1
0
0
1
1
0
0
Powerup, Forward Battery. Normal talk and battery feed state. Pin PT is positive with respect to
PR. On-hook transmission is enabled. Current limit is set per R
Powerup, Reverse Battery. Normal talk and battery feed state. Pin PT is negative with respect
to PR. On-hook transmission is enabled. Current limit is set per R
Powerup, Forward Battery, High Current Limit. Normal talk and battery feed state. Pin PT is
positive with respect to PR. On-hook transmission is enabled. Current limit is a nominal 1.4 times
higher than setting per R
Powerup, Reverse Battery, High Current Limit. Normal talk and battery feed state. Pin PT is
negative with respect to PR. On-hook transmission is enabled. Current limit is a nominal 1.4 times
higher than setting per R
Low-Power Scan. Except for off-hook detection, all circuits are shut down to conserve power. Pin
PT is positive with respect to pin PR. On-hook transmission is disabled.
Disconnect. The tip and ring amplifiers are turned off, and the SLIC goes to a high-impedance
state (>100 k ). Supervision outputs read on hook. Device will power up in this state.
Disconnect. The tip and ring amplifiers are turned off, and the SLIC goes to a high-impedance
state (>100 k ). Supervision outputs read on hook. Device will power up in this state.
Low-Power Scan. Except for off-hook suppression, all circuits are shut down to conserve power.
Pin PT is positive with respect to pin PR. On-hook transmission is disabled.
NSTAT
PROG
PROG
resistor.
resistor.
State/Definition
0 = Normal device operation.
1 = Device is in thermal shutdown.
PROG
PROG
TSD
resistor.
resistor.
November 2001
Agere Systems Inc.
Data Sheet