Electrical Specifications

AC Electrical Specifications

8.6.7JTAG Interface AC Timing

8.6.7.1JTAG Interface AC Timing Table

Table 54: JTAG Interface AC Timing Table

 

 

30 MHz

 

 

Description

Symbol

Min

 

Max

Units

Notes

JTClk frequency

fCK

 

30.0

MHz

-

JTClk minimum pulse w idth

Tpw

0.45

 

0.55

tCK

-

JTClk rise/fall slew rate

Sr/Sf

0.50

 

-

V/ns

2

JTRSTn active time

Trst

1.0

 

-

ms

-

TMS, TDI input setup relative to JTClk rising edge

Tsetup

6.67

 

-

ns

-

TMS, TDI input hold relative to JTClk rising edge

Thold

13.0

 

-

ns

-

JTClk falling edge to TDO output delay

Tprop

1.0

 

8.33

ns

1

Notes:

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

General comment: tCK = 1/fCK.

1.For TDO signal, the load is CL = 10 pF.

2.Defined from VIL to VIH for rise time, and from VIH to VIL for fall time.

8.6.7.2JTAG Interface Test Circuit

Figure 21: JTAG 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 101

Page 101
Image 101
Marvel Group 88F6281 Jtag Interface AC Timing Table, Jtag Interface Test Circuit, MHz Description Symbol Min Max Units