PM7346 datasheet(143/419 Pages) PMC

143 / 419 page

PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 122

Bit

Type

Function

Default

Bit 7

R/W

DPFRM

Bit 6

R/W

DAFRM

Bit 5

R/W

DB1

Bit 4

R/W

DFEBE

Bit 3

R/W

YEL

Bit 2

R/W

LSS[2]

Bit 1

R/W

LSS[1]

Bit 0

R/W

LSS[0]

LSS[2:0]:

The LSS[2:0] bits control the value inserted in the link status signal code bit

positions of the path status octet (G1). These bits should be written with logic

0 when implementing an ATM Forum UNI-compliant DS3 interface.

YEL:

The YEL bit controls the yellow signal bit position in the path status octet

(G1). When a logic 1 is written to YEL, the PLCP yellow alarm signal is

transmitted.

DFEBE:

The DFEBE bit controls the insertion of far end block errors in the PLCP

frame. When DFEBE is written with a logic 1, a single FEBE is inserted each

PLCP frame. When DFEBE is written with a logic 0, FEBEs are indicated

based on receive PLCP bit interleaved parity errors.

DB1:

The DB1 bit controls the insertion of bit interleaved parity (BIP) errors in the

PLCP frame. When DB1 is written with a logic 1, a single BIP error is

inserted in each PLCP frame. When DB1 is written with a logic 0, the bit

interleaved parity is calculated and inserted normally.

DAFRM:

The DAFRM bit controls the insertion of frame alignment pattern errors.

When DAFRM is written with a logic 1, a single bit error is inserted in each A1

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