w6694 Winbond Electronics Corp America, w6694 Datasheet - Page 30

• Manufacturer Part Number: w6694
• Description: Usb Bus Isdn S/t-controller
• Manufacturer: Winbond Electronics Corp America

9.4 Preliminary Switching Characteristics
9.4.1 PCM Interface Timing
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
Detailed PCM timing
at channel 1 and channel 2, each with a 8 x PBCK duration.
(1.536MHz)
PBCK
PFCK1
PFCK2
PTXD
PRXD
PBCK
PTXD
PFCK1
PFCK2
PRXD
ta3
ta4
Port
1
Port
1
CH 1
ta1 ta2
ta7
CH 2
Port
2
Port
2
ta8
24 CHs
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Preliminary W6694
ta6
ta5
Port
1
Port
1
Port2
Port
2