Datasheet

____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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14.9 JTAG Interface Timing
Table 14-18. 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 14-28. 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