SSM2518CPZ-R7 datasheet(19/48 Pages) AD

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Datasheet

SSM2518

Rev. B | Page 19 of 48

specified in this register, analog clipping may occur within the

range of possible digital codes.

FAULT DETECTION AND RECOVERY

Three fault conditions are detected by the SSM2518 fault

detection system: left channel overcurrent, right channel

overcurrent, and overtemperature. When any of these is

detected, the amplifier shuts down and a read-only I2C bit is set

to indicate the cause of the shutdown. The OC_L, OC_R, and

OT fault indicators are Bit 7, Bit 6, and Bit 5 (respectively) of

An autorecovery feature can be enabled for temperature faults,

current faults, or both, depending on the state of ARCV (Bit 1

and Bit 0 of Register 0x08).

If autorecovery is enabled, the amplifier waits a short time

(10 ms, 20 ms, 40 ms, or 80 ms) and attempts to recover. The

recovery delay is set by AR_TIME (Bit 7 and Bit 6 of Register 0x09).

The maximum number of consecutive recovery attempts can be

set to one, three, seven, or unlimited attempts; this number is

set by MAX_AR (Bit 3 and Bit 2 of Register 0x08).

If the autorecovery feature is disabled or the maximum number

of attempts has been reached, the amplifier remains shut down

until a software reset or manual fault recovery attempt occurs.

The manual fault recovery is triggered by setting the write-only

bit, MRCV (Bit 4 of Register 0x08).

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