DSP56721 Freescale Semiconductor, Inc, DSP56721 Datasheet - Page 35

• Manufacturer Part Number: DSP56721
• Description: Dsp56721 Multi-core Audio Processor
• Manufacturer: Freescale Semiconductor, Inc

2.2.8
For watchdog timer timing, see
2.2.9
The HDI24 module is only on the DSP56721 device; the DSP56720 device does not have a HDI24 module. Also, only 16 bits
of the HDI24 interface are pinned out on the DSP56721 device. See
Figure
Freescale Semiconductor
No.
317
318
319
30,
No.
120
121
Read data strobe assertion width 3
HACK read assertion width
Read data strobe deassertion width 3
HACK read deassertion width
Read data strobe deassertion width 3 after “Last Data Register” reads 4,5 ,
or between two consecutive CVR, ICR, or ISR reads 6
HACK deassertion width after “Last Data Register” reads 4,5
Figure
Delay from time-out to fall of WDT, WDT_1
Delay from timer clear to rise of WDT, WDT_1
Watchdog Timer Timing
Host Data Interface (HDI24) Timing
(Output)
(Output)
(Output)
(Input)
(Input)
31,
TMS
TDO
TDO
TDO
TCK
TDI
Figure
Symphony
32,
Table
Figure
VIL
TM
Table 17. Watchdog Timer Timing Parameters
Characteristics 2
Characteristics
Figure 28. Test Access Port Timing Diagram
17.
DSP56720 / DSP56721 Multi-Core Audio Processors, Rev. 3
33,
Table 18. HDI24 Timing Parameters
Figure
119
118
118
34, and
Figure 35
Table 18
for timing diagrams.
116
Output Data Valid
Output Data Valid
Input Data Valid
for HDI24 timing and
Expression
2 × T c
2 × Tc
Expression
2 × T
T
C
VIH
—
+ 9.9
C
117
+ 6.6
10.0
10.0
Min
Figure
14.9
16.6
Min
9.9
200 MHz
Max
—
—
29,
Max
Figure
—
—
—
Unit
ns
ns
30,
Unit
ns
ns
ns
35