dsp56362 Freescale Semiconductor, Inc, dsp56362 Datasheet - Page 45

• Manufacturer Part Number: dsp56362
• Description: Dsp56362 24-bit Audio Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
No.
131 Page mode cycle time for two consecutive
132 CAS assertion to data valid (read)
133 Column address valid to data valid (read)
134 CAS deassertion to data not valid (read hold
135 Last CAS assertion to RAS deassertion
136 Previous CAS deassertion to RAS deassertion
accesses of the same direction
Page mode cycle time for mixed (read and write)
accesses.
time)
Table 3-9 DRAM Page Mode Timings, One Wait State (Low-Power Applications)
DRAM Type
(tRAC ns)
100
80
70
60
50
Characteristics
Figure 3-13 DRAM Page Mode Wait States Selection Guide
1 Wait States
2 Wait States
40
Note: This figure should be used for primary selection. For
66
DSP56362 Technical Data, Rev. 4
exact and detailed timings see the following tables.
80
Symbol
t
t
t
RHCP
t
RSH
t
CAC
t
OFF
PC
AA
100
0.75 × T
3 Wait States
4 Wait States
1.5 × T
Expression
2 × T
1.25 x Tc
T
120
2 × T
C
− 7.5
C
C
C
− 4.0
C
− 7.5
− 4.0
Chip Frequency
(MHz)
External Memory Expansion Port (Port A)
100.0
62.5
33.5
96.0
Min
0.0
—
—
20 MHz
Max
42.5
67.5
—
4
—
—
—
—
66.7
41.7
21.0
62.7
Min
0.0
AA0472
—
—
30 MHz 4
1, 2, 3
Max
25.8
42.5
—
—
—
—
—
Unit
3-19
ns
ns
ns
ns
ns
ns