702560 Spectrum Digital Inc, 702560 Datasheet - Page 27

• 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

Equation 3-2. Key Timing Path Case 2
Case 2: Single/multiprocessor, TMS/TDI/TCK buffered input, TDO buffered output,
TMS/TDI timed from TCK_RET high.
In this case, the TCK_RET-to-TDO path is the limiting factor.
t
t
pd(TCK_RET - TMS/TDI)
pd(TCK_RET - TDO)
= [t
= [15 ns + 2.5 ns + 10 ns] / 0.4
= 68.75 ns (14.5 MHZ)
= [31 ns + 10 ns + 1.35 ns]
= 42.35 ns (23.6 MHz)
d(TTDO)
= t
d(TMSmax)
+ t
SU(TDOmin)
+ t
su(TTMS)
+ t
+ t
d(bufmax)
(bufskew)
] / t
Spectrum Digital, Inc
(TCKfactor)
3-9