Rainbow Electronics DS2152 - Manual (Page 27)

DS2152
031897 27/79
16ZD RIR1.5 Sixteen Zero Detect. Set when a string of at least sixteen consecutive
zeros (regardless of the length of the string) have been received at RPOSI
and RNEGI.
RESF RIR1.4 Receive Elastic Store Full. Set when the receive elastic store buffer fills
and a frame is deleted.
RESE RIR1.3 Receive Elastic Store Empty. Set when the receive elastic store buffer
empties and a frame is repeated.
SEFE RIR1.2 Severely Errored Framing Event. Set when 2 out of 6 framing bits (Ft or
FPS) are received in error.
B8ZS RIR1.1 B8ZS Code Word Detect. Set when a B8ZS code word is detected at
RPOS and RNEG independent of whether the B8ZS mode is selected or
not via CCR2.6. Useful for automatically setting the line coding.
FBE RIR1.0 Frame Bit Error. Set when a Ft (D4) or FPS (ESF) framing bit is received in
error.
RIR2: RECEIVE INFORMATION REGISTER 2 (Address=31 Hex)
(MSB) (LSB)
RLOSC LRCLC TESF TESE TSLIP RBLC RPDV TPDV
SYMBOL POSITION NAME AND DESCRIPTION
RLOSC RIR2.7 Receive Loss of Sync Clear. Set when the framer achieves synchroniza-
tion; will remain set until read.
LRCLC RIR2.6 Line Interface Receive Carrier Loss Clear. Set when the carrier signal is
restored; will remain set until read. See Table 4–2.
TESF RIR2.5 Transmit Elastic Store Full. Set when the transmit elastic store buffer fills
and a frame is deleted.
TESE RIR2.4 Transmit Elastic Store Empty. Set when the transmit elastic store buffer
empties and a frame is repeated.
TSLIP RIR2.3 Transmit Elastic Store Slip Occurrence. Set when the transmit elastic
store has either repeated or deleted a frame.
RBLC RIR2.2 Receive Blue Alarm Clear. Set when the Blue Alarm (AIS) is no longer
detected; will remain set until read. See Table 4–2.
RPDV RIR2.1 Receive Pulse Density Violation. Set when the receive data stream does
not meet the ANSI T1.403 requirements for pulse density.
TPDV RIR2.0 Transmit Pulse Density Violation. Set when the transmit data stream
does not meet the ANSI T1.403 requirements for pulse density.
RIR3: RECEIVE INFORMATION REGISTER 3 (Address=10 Hex)
(MSB) (LSB)
RL1 RL0 JALT LORC FRCL – – –
SYMBOL POSITION NAME AND DESCRIPTION
RL1 RIR3.7 Receive Level BIt 1. See Table 4–1.