Datasheet

1
1
2
3
4
5
TMS
TDI
TDO
RTCK
TCK
RM46L450
RM46L850
SPNS184A –SEPTEMBER 2012–REVISED SEPTEMBER 2013 www.ti.com
4.21.5 JTAG Scan Interface Timings
Table 4-40. JTAG Scan Interface Timing
(1)
No. Parameter Min MAX Unit
fTCK TCK frequency (at HCLKmax) 12 MHz
fRTCK RTCK frequency (at TCKmax and HCLKmax) 10 MHz
1 td(TCK -RTCK) Delay time, TCK to RTCK 24 ns
2 tsu(TDI/TMS - RTCKr) Setup time, TDI, TMS before RTCK rise (RTCKr) 26 ns
3 th(RTCKr -TDI/TMS) Hold time, TDI, TMS after RTCKr 0 ns
4 th(RTCKr -TDO) Hold time, TDO after RTCKf 0 ns
5 td(TCKf -TDO) Delay time, TDO valid after RTCK fall (RTCKf) 12 ns
(1) Timings for TDO are specified for a maximum of 50pF load on TDO
Figure 4-21. JTAG Timing
118 System Information and Electrical Specifications Copyright © 2012–2013, Texas Instruments Incorporated
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