702562 Spectrum Digital Inc, 702562 Datasheet - Page 27
702562
Manufacturer Part Number
702562
Description
EMULATOR XDS560R USB JTAG 14PIN
Manufacturer
Spectrum Digital Inc
Type
USB JTAG Emulatorr
Specifications of 702562
Contents
Board, Cable
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