STC5425 datasheet(36/48 Pages) CONNOR-WINFIELD

36 / 48 page

Page 36 of 48 TM113

Rev:P1.3

Date: September 20, 2011

STC5425

Line Card Clock

Data sheet

Preliminary

Default value: 7

Frame_Phase_Align, 0x42 (R/W)

Selects frame reference input and the sampling of the selected reference for frame alignment.

Frame reference input selection:

Selects any one from the three external sync inputs as frame reference for Ref1~Ref5 individually. External

sync inputs can take frequency of 2kHz or 8kHz and this frequency is auto-detectable. When none of frame ref-

erence inputs is used, set 0 to select its own frame pulse output of CLK8K as frame reference.

Frame phase alignment and edge selection:

Selects either frame phase arbitrary mode or frame phase align mode. Selects the sampling edge on the

selected reference input in phase align mode. If phase arbitrary mode is selected, any selection of frame refer-

ence will be dismissed.

Default value: 0

Address

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

0x42

Frame Phase Alignment

and Edge Selection for

Ref2

Frame Reference Selec-

tion for Ref2

Frame Phase Alignment

and Edge Selection for

Ref1

Frame Reference Selec-

tion for Ref1

0x43

Not used

Frame Phase Alignment

and Edge Selection for

Ref3

Frame Reference Selec-

tion for Ref3

0x44

Frame Phase Alignment

and Edge Selection for

Ref5

Frame Reference Selec-

tion for Ref5

Frame Phase Alignment

and Edge Selection for

Ref4

Frame Reference Selec-

tion for Ref4

Bits 1 ~ 0

Bits 5 ~ 4

Frame Reference Select

Frame pulse output of CLK8K generated from

the device

Frame reference input EX_SYNC1

Frame reference input EX_SYNC2

Frame reference input EX_SYNC3

Bits 3 ~ 2

Bits 7 ~ 6

Frame phase

alignment

Frame Edge of Selected Reference Select

Frame phase

arbitrary mode

Dismiss frame reference selection

Frame phase

align mode

Rising edge nearest to the frame pulse on the

external frame reference input

Rising edge previous to the frame pulse on

the external frame reference input

Rising edge next to the frame pulse on the

external frame reference input

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