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参数资料
| 型号： | LUCL9219GAR-DT |
| 英文描述： | Low-Cost Line Interface with Reverse Battery and Dual Current Limit |
| 中文描述： | 低成本线接口，具有反向电池和双电流限制 |
| 文件页数： | 27/30页 |
| 文件大小： | 397K |
| 代理商： | LUCL9219GAR-DT |
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6
Agere Systems Inc.
Data Sheet
November 2001
with Reverse Battery and Dual Current Limit
L9219A/G Low-Cost Line Interface
Functional Description
Table 2. Input State Coding
Table 3. Supervision Coding
B0
B1
B2
State/Definition
1
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 RPROG resistor.
1
0
1
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 RPROG resistor.
1
0
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 RPROG resistor.
1
0
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 RPROG resistor.
0
1
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.
0
1
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.
0
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.
0
1
0
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
TSD
0 = off-hook or ring trip.
1 = on-hook and no ring trip.
0 = Normal device operation.
1 = Device is in thermal shutdown.
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