PM7347 datasheet(201/341 Pages) PMC

201 / 341 page

S/UNI®-JET Data Sheet

Released

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

201

Document ID: PMC-1990267, Issue 3

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

Unused

Bit 5

Unused

Bit 4

Unused

Bit 3

Unused

Bit 2

R/W

LCDC[10]

Bit 1

R/W

LCDC[9]

Bit 0

R/W

LCDC[8]

Bit

Type

Function

Default

Bit 7

R/W

LCDC[7]

Bit 6

R/W

LCDC[6]

Bit 5

R/W

LCDC[5]

Bit 4

R/W

LCDC[4]

Bit 3

R/W

LCDC[3]

Bit 2

R/W

LCDC[2]

Bit 1

R/W

LCDC[1]

Bit 0

R/W

LCDC[0]

LCDC[10:0]

The LCDC[10:0] bits represent the number of consecutive cell periods the receive cell

processor must be out of cell delineation before loss of cell delineation (LCD) is declared.

Likewise, LCD is not de-asserted until receive cell processor is in cell delineation for the

number of cell periods specified by LCDC[10:0].

The default value of LCD[10:0] is 360, which translates to the integration periods shown in

Table 22.

Table 22 RXCP-50 LCD Integration Periods

Format

Average cell period

Default LCD integration

period

DS3 Direct Mapping

9.59 µs

3.45 ms

DS3 PLCP

10.42 µs

3.75 ms

E3 G.751 Direct Mapping

12.46 µs

4.49 ms

E3 G.751 PLCP

13.89 µs

5.00 ms

E3 G.832

12.50 µs

4.50 ms

J2 Direct Mapping

69.01 µs

24.84 ms

DS1 Direct Mapping

276.00 µs

99.40 ms

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