Line.rsr, Line.rsrl – Rainbow Electronics DS3170 User Manual
Page 153
DS3170 DS3/E3 Single-Chip Transceiver
153 of 233
Bit 0: Receive Zero Suppression Decoding Disable (RZSD) – When 0, the B3ZS/HDB3 Decoder performs zero
suppression (B3ZS or HDB3) and AMI decoding. When 1, zero suppression (B3ZS or HDB3) decoding is disabled,
and only AMI decoding is performed.
Register Name:
LINE.RSR
Register Description:
Line Receive Status Register
Register Address:
(0.2.4.6)94h
Bit
# 15 14 13 12 11 10 9 8
Name
-- -- -- -- -- -- -- --
Bit
# 7 6 5 4 3 2 1 0
Name
-- -- -- --
EXZC -- BPVC LOS
Bit 3: Excessive Zero Count (EXZC) – When 0, the excessive zero count is zero. When 1, the excessive zero
count is one or more.
Bit 1: Bipolar Violation Count (BPVC) – When 0, the bipolar violation count is zero. When 1, the bipolar violation
count is one or more.
Bit 0: Loss Of Signal (LOS) – When 0, the receive line is not in a loss of signal (LOS) condition. When 1, the
receive line is in an LOS condition. See Section
Register Name:
LINE.RSRL
Register Description:
Line Receive Status Register Latched
Register Address:
(0.2.4.6)96h
Bit
# 15 14 13 12 11 10 9 8
Name
-- -- -- -- -- -- -- --
Bit
# 7 6 5 4 3 2 1 0
Name -- --
ZSCDL EXZL EXZCL BPVL BPVCL LOSL
Bit 5: Zero Suppression Code Detect Latched (ZSCDL) – This bit is set when a B3ZS or HDB3 signature is
detected.
Bit 4: Excessive Zero Latched (EXZL) – This bit is set when an excessive zero event is detected on the incoming
bipolar data stream.
Bit 3: Excessive Zero Count Latched (EXZCL) – This bit is set when the LINE.RSR.EXZC bit transitions from
zero to one.
Bit 2: Bipolar Violation Latched (BPVL) – This bit is set when a bipolar violation (or E3 LCV if enabled) is
detected on the incoming bipolar data stream.
Bit 1: Bipolar Violation Count Latched (BPVCL) – This bit is set when the LINE.RSR.BPVC bit transitions from
zero to one.
Bit 0: Loss of Signal Change Latched (LOSL) – This bit is set when the LINE.RSR.LOS bit changes state.
Note: When zero suppression (B3ZS or HDB3) decoding is disabled, the LOS condition is cleared, and cannot be
detected.