PM7347 datasheet(155/341 Pages) PMC

155 / 341 page

S/UNI®-JET Data Sheet

Released

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

155

Document ID: PMC-1990267, Issue 3

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

R/W

PYLD&JUST

Bit 5

R/W

CPERR

Bit 4

R/W

DFERR

Bit 3

R/W

DLCV

Bit 2

R/W

Reserved

Bit 1

R/W

TAIS

Bit 0

R/W

NATUSE

The NATUSE bit determines the default value of the National Use bit inserted into the G.751

E3 frame overhead. The value of the NATUSE bit is logically ORed with the bit collected

once per frame from the internal HDLC transmitter (if TNETOP is set to logic one). When

TNETOP is logic zero, the NATUSE bit controls the value of the National Use bit. When

NATUSE is logic one, the National Use bit (bit 12 in G.751) is forced to logic one regardless

of the bit input from the internal HDLC transmitter or the setting of TNETOP. When

NATUSE is logic zero, the National Use bit is set to the value sampled from the internal

HDLC transmitter if TNETOP is logic zero. Otherwise, the National Use bit will be set to

logic zero. If the E3 TRAN is configured for G.832 mode, this bit is ignored.

TAIS

The TAIS bit enables AIS signal transmission. When TAIS is logic one, the all 1’s AIS signal

is transmitted. When TAIS is logic zero, the normal data is transmitted.

Reserved

The Reserved bit must be programmed to logic zero for proper operation.

DLCV

The DLCV bit selects whether a LCV is generated for diagnostic purposes. When DLCV

changes from logic zero to logic one, single LCV is generated; in HDB3, the LCV is

generated by causing a bipolar violation pulse of the same polarity to the previous bipolar

violation. To generate another LCV, the DLCV register bit must be first be written to logic

zero and then to logic one again.

PM7347 Datasheet(PDF) 155 Page - PMC-Sierra, Inc

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