DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver
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Register Name:
TR.SR2
Register Description:
Status Register 2
Register Address:
18h
Bit
# 7 6 5 4 3 2 1 0
Name RYELC RUA1C FRCLC
RLOSC RYEL RUA1 FRCL RLOS
Default
0 0 0 0 0 0 0 0
Bit 7: Receive Yellow Alarm Clear Event (RYELC)
(T1 Only).
Set when the receive Yellow Alarm condition is no
longer detected.
Bit 6: Receive Unframed All-Ones Clear Event (RUA1C).
Set when the unframed all 1s condition is no longer
detected.
Bit 5: Framer Receive Carrier-Loss Clear Event (FRCLC).
Set when the carrier loss condition at RPOSI and
RNEGI is no longer detected.
Bit 4: Receive Loss-of-Sync Clear Event (RLOSC).
Set when the framer achieves synchronization; remains set
until read.
Bit 3: Receive Yellow Alarm Condition (RYEL) (T1 Only).
Set when a Yellow Alarm is received at RPOSI and
RNEGI.
Bit 2: Receive Unframed All-Ones (T1 Blue Alarm, E1 AIS) Condition (RUA1).
Set when an unframed all 1s
code is received at RPOSI and RNEGI.
Bit 1: Framer Receive Carrier-Loss Condition (FRCL).
Set when 255 (or 2048 if TR.E1RCR2.0 = 1) E1 mode or
192 T1 mode consecutive 0s have been detected at RPOSI and RNEGI.
Bit 0: Receive Loss-of-Sync Condition (RLOS).
Set when the transceiver is not synchronized to the received
data stream.