Datasheet

TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
Table 13-11. JTAG Interface Timing Requirements
Notation Parameter Min Max Unit
Clock
JL1 t
c(TCK)
Cycle time, JTAG.TCK period 30 ns
JL2 t
w(TCK)
Pulse duration, JTAG.TCK high or low
(1)
0.48*P 0.52*P ns
Read Timing
JL3 t
su(TDIV-TCKH)
Setup time, JTAG.TDI valid before JTAG.TCK high 8 ns
JL4 t
h(TDIV-TCKH)
Hold time, JTAG.TDI valid after JTAG.TCK high 5 ns
JL5 t
su(TMSV-TCKH)
Setup time, JTAG.TMS valid before JTAG.TCK high 8 ns
JL6 t
h(TMSV-TCKH)
Hold time, JTAG.TMS valid after JTAG.TCK high 5 ns
(1) P = JTAG.TCK clock period
Table 13-12. JTAG Interface Switching Characteristics
Notation Parameter Min Max Unit
Write Timing
JL7 t
d(TCK-TDOV))
Delay time, JTAG, TCK active edge to JTAG.TDO valid 0 14 ns
152 Timing Requirements and Switching Characteristics Copyright © 2008–2011, Texas Instruments Incorporated
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