Electrical Specifications

AC Electrical Specifications

8.6.11Time Division Multiplexing (TDM) Interface AC Timing

8.6.11.1TDM Interface AC Timing Table

Table 59: TDM Interface AC Timing Table

 

 

8.192 MHz

 

 

Description

Symbol

Min

Max

Units

Notes

PCLK cycle time

1/tC

0.256

8.192

MHz

1, 3

PCLK duty cycle

tDTY

0.4

0.6

tC

1

PCLK rise/fall time

tR/tF

-

3.0

ns

1, 2, 8

DTX and FSYNC valid after PCLK rising edge

tD

0.0

20.0

ns

1, 4, 6

DRX and FSYNC setup time relative to PCLK falling edge

tSU

10.0

-

ns

5, 7

DRX and FSYNC hold time relative to PCLK falling edge

tHD

10.0

-

ns

5, 7

Notes:

General comment: All values w ere measured from vddio/2 to vddio/2, unless otherw ise specified.

1.For all signals, the load is CL = 20 pF.

2.Rise and Fall times are referenced to the 20% and 80% levels of the w aveform.

3.PCLK can be configured to 0.256, 0.512, 0.768, 1.024, 1.536, 2.048, 4.096, 8.192 MHz frequencies only.

4.This parameter is relevant to FSYNC signal in master-mode only.

5.This parameter is relevant to FSYNC signal in slave-mode only.

6.In negative-mode, the DTX signal is relative to PCLK falling edge.

7.In negative-mode, the DRX signal is relative to PCLK rising edge.

8.This parameter is relevant w hen the PCLK pin is output.

8.6.11.2TDM Interface Test Circuit

Figure 31: TDM Interface Test Circuit

Test Point

CL

Copyright © 2008 Marvell

 

Doc. No. MV-S104859-U0 Rev. E

December 2, 2008, Preliminary

Document Classification: Proprietary Information

Page 109

Page 109
Image 109
Marvel Group 88F6281 specifications Time Division Multiplexing TDM Interface AC Timing, TDM Interface AC Timing Table