le9531cmqc Zarlink Semiconductor, le9531cmqc Datasheet - Page 20

• Manufacturer Part Number: le9531cmqc
• Description: Ringing Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

Operating State Definitions
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Active—Forward Battery—Low DC Current Limit
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Active—Forward Battery—High DC Current Limit
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Active—Reverse Battery—Low DC Current Limit
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Except for loop closure, all circuits (including ring trip and ground start detector) are powered down.
On-hook transmission is disabled.
Pin PT is positive with respect to PR.
The tip to ring on-hook differential voltage will be typically between –44 V and –51 V with a –51 V to –100
primary battery.
Pin PT is positive with respect to PR.
DC loop current limit is 25 mA.
Loop closure detector is active.
Ring trip detector is turned off to conserve power.
On-hook transmission is allowed, supports undistorted transmission of 3.14 dBm into 900 ohms with
500 mVrms of PPM for any supported loop length.
The tip to ring on-hook differential voltage will be typically between –41 V and –49 V with a –51 V to –100 V
primary battery.
Default power up state.
Pin PT is positive with respect to PR.
DC loop current limit is 40 mA.
Loop closure detector is active.
Ring trip detector is turned off to conserve power.
On-hook transmission is allowed.
The tip to ring on-hook differential voltage will be typically between –41 V and –49 V with a –51 V to –100 V
primary battery.
Supports undistorted transmission of 3.14 dBm into 900 ohms with 500 mVrms of PPM for any supported
loop length and on-hook transmission
Pin PR is positive with respect to PT.
DC loop current limit is 25 mA.
Loop closure detector is active.
Ring trip detector is turned off to conserve power.
On-hook transmission is allowed.
The tip to ring on-hook differential voltage will be typically between –41 V and –49 V with a –51 V to –100 V
primary battery.
Supports undistorted transmission of 3.14 dBm into 900 ohms with 500 mVrms of PPM for any supported
loop length and on-hook transmission
Zarlink Semiconductor Inc.
Le9531
20
Data Sheet