USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
4.5.4
JTAG Timing
This section specifies the JTAG timing of the device.
ttckp
ttckhl
ttckhl
TCK (Input)
tsu
th
TDI, TMS (Inputs)
tdov
tdoh
TDO (Output)
Figure 4.2 JTAG Timing
Table 4.6 JTAG Timing Values
SYMBOL
DESCRIPTION
MIN
MAX
UNITS
NOTES
ttckp
ttckhl
tsu
TCK clock period
66.67
ttckp*0.4
10
ns
ns
ns
ns
ns
ns
TCK clock high/low time
ttckp*0.6
TDI, TMS setup to TCK rising edge
TDI, TMS hold from TCK rising edge
TDO output valid from TCK falling edge
TDO output hold from TCK falling edge
th
10
tdov
tdoh
16
0
SMSC LAN9514/LAN9514i
Revision 1.0 (11-24-09)
DATA4S5HEET