CS61535A-IL1 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS61535A-IL1

T1/E1 Line Interface

Cirrus Logic 

CS61535A

Status

AIS - Alarm Indication Signal, Pin 11. (Extended Hardware Mode)

AIS goes high when unframed all-ones condition (blue alarm) is detected, using the detection

criteria of less than three zeros out of 2048 bit periods.

BPV- Bipolar Violation Strobe, Pin 6. (Extended Hardware Mode)

BPV strobes high when a bipolar violation is detected in the received signal. B8ZS (or HDB3)

zero substitutions are not flagged as bipolar violations if the B8ZS (or HDB3) decoder has been

enabled.

DPM - Driver Performance Monitor, Pin 11. (Hardware and Host Modes)

DPM goes high if no activity is detected on MTIP and MRING.

LOS - Loss of Signal, Pin 12.

LOS goes high when 175 consecutive zeros have been received. For the CS61535A, LOS returns

low when the ones density reaches 12.5% (based upon 175 bit periods starting with a one and

containing less than 100 consecutive zeros) as prescribed by ANSI T1.231-1993.

MTIP, MRING - Monitor Tip, Monitor Ring, Pins 17 and 18. (Hardware and Host Modes)

These pins are normally connected to TTIP and TRING and monitor the output of a CS61535A.

If the INT pin in the host mode is used, and the monitor is not used, writing "Clear DPM" to the

serial interface will prevent an interrupt from the driver performance monitor.

DS40F1

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