AC Electrical Characteristics
CLKOUT
(Output)
490
491
GPIO
(Output)
492
493
GPIO
(Input)
Valid
A[0–23]
494
Fetch the instruction MOVE X0,X:(R0); X0 contains the new value of GPIO
and R0 contains the address of GPIO data register.
Figure 2-45. GPIO Timing
2.5.11 JTAG Timing
Table 2-25. JTAG Timing
Characteristics1,2
All frequencies
Min Max
No.
Unit
500 TCK frequency of operation (1/(T × 3); maximum 22 MHz)
0.0
45.0
20.0
0.0
22.0
—
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
501 TCK cycle time in Crystal mode
502 TCK clock pulse width measured at 1.5 V
503 TCK rise and fall times
—
3.0
—
504 Boundary scan input data setup time
505 Boundary scan input data hold time
506 TCK low to output data valid
507 TCK low to output high impedance
508 TMS, TDI data setup time
5.0
24.0
0.0
—
40.0
40.0
—
0.0
5.0
509 TMS, TDI data hold time
25.0
0.0
—
510 TCK low to TDO data valid
511 TCK low to TDO high impedance
512 TRST assert time
44.0
44.0
—
0.0
100.0
40.0
513 TRST setup time to TCK low
—
Notes: 1.
V
= 3.3 V 0.3 V; T = −40°C to +100 °C, C = 50 pF
CC J L
2. All timings apply to OnCE module data transfers because it uses the JTAG port as an interface.
DSP56301 Technical Data, Rev. 10
Freescale Semiconductor
2-49
FREESCALE [ Freescale ]
