DS3172 datasheet(180/232 Pages) DALLAS

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T3.RSR1

T3 Receive Status Register #1

(1,3,5,7)24h

Bit #

Name

Reserved

T3FM

AIC

IDLE

RUA1

Bit #

Name

OOMF

SEF

LOF

RDI

AIS

OOF

LOS

Bit 11: T3 Framing Format Mismatch (T3FM) – This bit indicates the DS3 framer is programmed for a framing

format (C-bit or M23) that is different than the format indicated by the incoming DS3 signal.

Bit 10: Application Identification Channel (AIC) – This bit indicates the current state of the Application

Identification Channel (AIC) from the C11 bit. AIC = 1 is C-bit mode, AIC = 0 is M23 mode.

Bit 9: DS3 Idle Signal (IDLE) – When 0, the receive frame processor is not in a DS3 idle signal (Idle) condition.

When 1, the receive frame processor is in an Idle condition.

Bit 8: Receive Unframed All 1’s (RUA1) – When 0, the receive frame processor is not in a receive unframed all

1’s (RUA1) condition. When 1, the receive frame processor is in an RUA1 condition.

Bit 7: Out Of Multi-frame (OOMF) – When 0, the receive frame processor is not in an out of multi-frame (OOMF)

condition. When 1, the receive frame processor is in an OOMF condition.

Bit 6: Severely Errored Frame (SEF) – When 0, the receive frame processor is not in a severely errored frame

(SEF) condition. When 1, the receive frame processor is in an SEF condition.

Bit 4: Loss Of Frame (LOF) – When 0, the receive framer is not in a loss of frame (LOF) condition. When 1, the

receive frame processor is in an LOF condition.

Bit 3: Remote Defect Indication (RDI) – This bit indicates the current state of the remote defect indication (RDI)

Bit 2: Alarm Indication Signal (AIS) – When 0, the receive frame processor is not in an alarm indication signal

(AIS) condition. When 1, the receive frame processor is in an AIS condition.

Bit 1: Out Of Frame (OOF) – When 0, the receive framer is not in an out of frame (OOF) condition. When 1, the

receive frame processor is in an OOF condition.

Bit 0: Loss Of Signal (LOS) – When 0, the receive framer is not in a loss of signal (LOS) condition. When 1, the

receive framer is in an LOS condition.

T3.RSR2

T3 Receive Status Register #2

(1,3,5,7)26h

Bit #

Name

Bit #

Name

CPEC

FBEC

PEC

FEC

Bit 3: C-bit Parity Error Count (CPEC) – When 0, the C-bit parity error count is zero. When 1, the C-bit parity

error count is one or more. This bit is set to zero in M23 DS3 mode.

Bit 2: Remote Error Indication Count (FBEC) – When 0, the remote error indication count is zero. When 1, the

remote error indication count is one or more. This bit is set to zero in M23 DS3 mode.

Bit 1: P-bit Parity Error Count (PEC) – When 0, the P-bit parity error count is zero. When 1, the P-bit parity error

count is one or more.

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