702560 Spectrum Digital Inc, 702560 Datasheet - Page 25

• Manufacturer Part Number: 702560
• Description: XDS560R USB JTAG Emulator With 20 Pin CTI JTAG Header
• Manufacturer: Spectrum Digital Inc
• Type: USB JTAG Emulatorr

Specifications of 702560

• Contents: Board, Cable
• Ic Product Type: USB JTAG Emulator
• Kit Contents: XDS560R USB JTAG Emulator With CTI JTAG Header, CDROM With Drivers, USB Cable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TI DSPs and JTAG Microcontrollers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.4 XDS560R Emulator Cable Pod Signal Timing
No
1
2
3
4
5
6
t
t
t
t
T
T
c (T C K )
w( T CKH )
w( T CKL )
pd( T M S - T DI )
s u ( T D O )
hd (TD O )
Reference
Figure 3-4 shows the default timing waveforms for the XDS560R emulator cable pod.
The table below defines the timing parameters. These timing parameters are calculated
from values specified in the standard data sheets for the emulator and cable pod and
are for reference only.
The presented timing parameters are calculated for the end of the 14-pin target cable
header. Texas Instruments does not test or guarantee these timings.
The XDS560 emulator cable pod uses TCK_RET as its clock source for internal
synchronization. TCK is provided as an optional target system test-clock source.
Note: The delay timing for TMS/TDI valid is calculated for the default rising edge
TCK_RET. The delay time for TMS/TDI valid for a falling edge TCK_RET
configuration is vary similar.
TCK_RET
TMS/TDI
Table 2: Emulator Pod Timing Parameters
TDO
Cycle time, TCK_RET
Pulse duration, TCK_RET high
Pulse duration, TCK_RET low
Delay time, TMS/TDI valid from TCK_RET high
Setup time, TDO valid before TCK_RET high
Hold time, TDO valid after TCK_RET high
Figure 3-4, Emulator Pod Timings
2
Description
4
1
3
5
Spectrum Digital, Inc
6
Min
2.5
20
10
10
18
0
Max
31
Units
ns
ns
ns
ns
ns
ns
3-7