Manual

DS2143/DS2143Q
031397 15/40
LOTC SR2.2 Loss of Transmit Clock. Set when the TCLK pin has not transitioned for
one channel time (or 3.9 µs). Will force pin 34 high if enabled via TCR2.0.
Based on RCLK.
RCMF SR2.1 Receive CRC4 Multiframe. Set on CRC4 multiframe boundaries; will con-
tinue to be set every 2 ms on an arbitrary boundary if CRC4 is disabled.
LORC SR2.0 Loss of Receive Clock. Set when the RCLK pin has not transitioned for at
least 2 µs (3 µs ±1 µs).
IMR1: INTERRUPT MASK REGISTER 1 (Address=16 Hex)
(MSB) (LSB)
RSA1 RDMA RSA0 SLIP RUA1 RRA RCL RLOS
SYMBOL POSITION NAME AND DESCRIPTION
RSA1 IMR1.7 Receive Signaling All Ones.
0 = interrupt masked
1 = interrupt enabled
RDMA IMR1.6 Receive Distant MF Alarm.
0 = interrupt masked
1 = interrupt enabled
RSA0 IMR1.5 Receive Signaling All Zeros.
0 = interrupt masked
1 = interrupt enabled
SLIP IMR1.4 Elastic Store Slip Occurrence.
0 = interrupt masked
1 = interrupt enabled
RUA1 IMR1.3 Receive Unframed All Ones.
0 = interrupt masked
1 = interrupt enabled
RRA IMR1.2 Receive Remote Alarm.
0 = interrupt masked
1 = interrupt enabled
RCL IMR1.1 Receive Carrier Loss.
0 = interrupt masked
1 = interrupt enabled
RLOS IMR1.0 Receive Loss of Sync.
0 = interrupt masked
1 = interrupt enabled