Datasheet

____________________________________________________ DS34S101, DS34S102, DS34S104, DS34S108
Rev: 032609 175 of 198
14.7 JTAG Interface Timing
Table 14-15. JTAG Interface Timing
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
JTCLK Clock Period
t1
1000
ns
JTCLK Clock High / Low Time
t2 / t3
100
500
ns
1
JTCLK to JTDI, JTMS Setup Time
t4
5
ns
JTCLK to JTDI, JTMS Hold Time
t5
2
ns
JTCLK to JTDO Delay
t6
2
50
ns
JTCLK to JTDO Hi-Z Delay
t7
2
50
ns
2
JTRST_N Width Low Time
t8
100
NOTES:
1. Clock can be stopped high or low.
2. Not tested during production test.
Figure 14-21. JTAG Interface Timing Diagram
JTCLK
JTDI
JTMS
JTDO
JTRST_N
t
1
t
2
t
3
t
4
t
5
t
4
t
5
t
6
t
7
t
8