RM46L450
RM46L850
SPNS184 –SEPTEMBER 2012
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4.21.5 JTAG Scan Interface Timings
Table 4-40. JTAG Scan Interface Timing(1)
No.
Parameter
Min
MAX
Unit
MHz
MHz
ns
fTCK
TCK frequency (at HCLKmax)
12
fRTCK
RTCK frequency (at TCKmax and HCLKmax)
Delay time, TCK to RTCK
10
1
2
3
4
5
td(TCK -RTCK)
tsu(TDI/TMS - RTCKr)
th(RTCKr -TDI/TMS)
th(RTCKr -TDO)
td(TCKf -TDO)
24
10
Setup time, TDI, TMS before RTCK rise (RTCKr)
Hold time, TDI, TMS after RTCKr
21
0
ns
ns
Hold time, TDO after RTCKf
0
ns
Delay time, TDO valid after RTCK fall (RTCKf)
ns
(1) Timings for TDO are specified for a maximum of 50pF load on TDO
TCK
RTCK
1
1
TMS
TDI
2
3
TDO
4
5
Figure 4-21. JTAG Timing
114
System Information and Electrical Specifications
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