Datasheet

DS26518 8-Port T1/E1/J1 Transceiver

256 of 312

BSR

BERT Status Register

110Eh + (10h x (n - 1)) : where n = 1 to 8

Bit # 7 6 5 4 3 2 1 0

Name — BBED RBA01 RSYNC BRA1 BRA0 BRLOS BSYNC

Default 0 0 0 0 0 0 0 0

Note: All latched bits in this register can create interrupts.

Bit 6: BERT Bit Error Detected Event (BBED). A latched bit that is set when a bit error is detected. The receive

BERT must be in synchronization for it to detect bit errors.

Bit 5: Real-Time BERT All Zeros or All Ones (RBA01). ORed real-time status of all-zeros detection and all-ones

detection.

Bit 4: Real-Time Sync (RSYNC). Real-time sync status. A zero indicates not synchronized; a one indicates

synchronization state.

Bit 3: BERT Receive All-Ones Condition (BRA1). A latched bit that is set when 32 consecutive ones are

received.

Bit 2: BERT Receive All-Zeros Condition (BRA0). A latched bit that is set when 32 consecutive zeros are

received.

Bit 1: BERT Receive Loss of Synchronization Condition (BRLOS). A latched bit that is set whenever the

receive BERT begins searching for a pattern.

Bit 0: BERT in Synchronization Condition (BSYNC). A latched bit that is set when the incoming pattern matches

for 32 consecutive bit positions.