PXR40 Datasheet, PDF (79/100 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Electrical characteristics
Table 31. JTAG pin AC electrical characteristics¹ (continued)
Spec
Characteristic
Symbol
Min
Max
Unit
7 TCK Low to TDO Data Invalid
t_TDOI
0
—
ns
8 TCK Low to TDO High Impedance
t_TDOHZ
—
20
ns
9 JCOMP Assertion Time
t_JCMPPW
100
—
ns
10 JCOMP Setup Time to TCK Low
t_JCMPS
40
—
ns
11 TCK Falling Edge to Output Valid
t_BSDV
—
50
ns
12 TCK Falling Edge to Output Valid out of High Impedance
t_BSDVZ
—
50
ns
13 TCK Falling Edge to Output High Impedance
t_BSDHZ
—
50
ns
14 Boundary Scan Input Valid to TCK Rising Edge
t_BSDST
50
—
ns
15 TCK Rising Edge to Boundary Scan Input Invalid
t_BSDHT
50
—
ns
1 _{JTAG timing specified at VDD = 1.08 V to 1.32 V, VDDE = 3.0 V to 3.6 V, VDD33 and VDDSYN = 3.0 V to 3.6 V, TA = TL to TH, and}
C_L = 30 pF with DSC = 0b10, SRC = 0b00. These specifications apply to JTAG boundary scan only. See Table 32 for functional
specifications.
TCK
3
2
2
1
3
Figure 13. JTAG test clock input timing
PXR40 Microcontroller Data Sheet, Rev. 1
Freescale Semiconductor
79