W66910 Datasheet, PDF(75/81 Page) Winbond – TE Mode ISDN S/T-Controller with Microprocessor Interface

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W66910 Datasheet, PDF (75/81 Pages) Winbond – TE Mode ISDN S/T-Controller with Microprocessor Interface

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Data Sheet

W66910 PCI ISDN S/T-Controller

Note: The load capacitance CL depends on the crystal specification. The typical values are 33 to 47 pF.

External ocsillator input (XTAL1) clock characteristics

Parameter

Duty cycle

Min.

1:2

Max.

2:1

9.4 Preliminary Switching Characteristics

9.4.1 PCM Interface Timing

PBCK

(1.536MHz)

PFCK1

PFCK2

PTXD

PRXD

CH 1 CH 2

Port1 Port2

24 CHs

Port1 Port2

Note 1: These drawings are not to scale.

Note 2 : The frequency of PBCK is 1536 kHz which includes 24 channels of 64 kbps data. The PFCK1 and PFCK2 are located at

channel 1 and channel 2, each with a 8 x PBCK duration.

Detailed PCM timing

PBCK

ta1 ta2

ta3

PFCK1

PFCK2

ta4

PTXD

ta7

ta5

ta6

-75 -

Publication Release Date: Feb,2001

Revision 1.0

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