Datasheet

DS3112
119 of 133
3
Figure 13-1
Table 1 -5. AC Characteristics—JTAG Test Port Interface
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS3112; T
A
= -40°C to +85°C for DS3112N.)
(See 2.)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
JTCLK Clock Period t1 1000 ns
JTCLK Clock Low Time t2 400 ns
JTCLK Clock High Time t3 400 ns
JTMS/JTDI Setup Time to the
Rising Edge of JTCLK
t4 50 ns
JTMS/JTDI Hold Time from the
Rising Edge of JTCLK
t5 50 ns
Delay Time from the Falling Edge
of JTCLK to Data Valid on JTDO
t6 2 50 ns
Figure 13-12. JTAG Test Port Interface AC Timing Diagram
JTCLK
JTMS/JTDI
JTDO
t4 t5
t6
t1
t2
t3