mpc880 Freescale Semiconductor, Inc, mpc880 Datasheet - Page 49
mpc880
Manufacturer Part Number
mpc880
Description
Mpc885 Powerquicc Integrated Communications Processor
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MPC880.pdf
(88 pages)
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12.3
Table 18
1
Freescale Semiconductor
Num
Applies to high-to-low mode (EDM = 1).
40
41
42
43
44
45
46
DREQ setup time to clock high
DREQ hold time from clock high
SDACK assertion delay from clock high
SDACK negation delay from clock low
SDACK negation delay from TA low
SDACK negation delay from clock high
TA assertion to rising edge of the clock setup time (applies to external TA)
provides the IDMA controller timings as shown in
IDMA Controller AC Electrical Specifications
(Output)
DREQ
(Input)
CLKO
MPC885/MPC880 PowerQUICC™ Hardware Specifications, Rev. 4
Figure 48. IDMA External Requests Timing Diagram
1
Table 18. IDMA Controller Timing
Characteristic
40
Figure 48
tthrough
41
Figure
All Frequencies
TBD
CPM Electrical Characteristics
Min
—
—
—
—
7
7
51.
Max
12
12
20
15
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
49