PM7344 datasheet(173/293 Pages) PMC

173 / 293 page

PM7344 S/UNI-MPH

DATA SHEET

PMC-950449

ISSUE 6

MULTI-PHY USER NETWORK INTERFACE

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

157

Registers 046H, 146H, 246H and 346H: E1-TRAN International/National

Control

Bit

Type

Function

Default

Bit 7

R/W

Si[1]

Bit 6

R/W

Si[0]

Bit 5

Unused

Bit 4

R/W

Sn[4]

Bit 3

R/W

Sn[5]

Bit 2

R/W

Sn[6]

Bit 1

R/W

Sn[7]

Bit 0

R/W

Sn[8]

Sn[4:8]:

Sn[4:8] of this register are substituted in bit positions 4 to 8, respectively, of

TS0 of each NFAS frame when framing generation (FDIS = 0) is enabled.

When FDIS is logic 1, the contents of this register are ignored and replaced

with either the TS0 datalink bits (if enabled) or random arbitrary data from the

serial input to the E1 TRAN block.

Si[1:0]:

The bits Si[1] and Si[0] correspond to the International bits. The Si[1] and

Si[0] bits can be programmed to any value and will be inserted into bit 1 of

each FAS frame and NFAS frame, respectively, when CRC multiframe

generation is disabled. When CRC multiframe generation is enabled, both

Si[1] and Si[0] are ignored if FEBE indication is enabled; if FEBEDIS is a logic

1 the values programmed in the Si[1] and Si[0] bit positions are inserted into

the spare bit locations of frame 13 and frame 15, respectively, of the CRC

multiframe.

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