dsp56362 Freescale Semiconductor, Inc, dsp56362 Datasheet - Page 40

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

External Memory Expansion Port (Port A)
3.10
3.10.1
3-14
No.
100 Address valid and AA assertion pulse width
101 Address and AA valid to WR assertion
102 WR assertion pulse width
103 WR deassertion to address not valid
External Memory Expansion Port (Port A)
SRAM Timing
Characteristics
Table 3-8 SRAM Read and Write Accesses 100 and 120 MHz
DSP56362 Technical Data, Rev. 4
3
Symbol
t
RC
t
t
t
WP
WR
, t
AS
WC
(WS − 0.5) × T
(WS + 1) × T
(WS + 2) × T
(WS + 3) × T
All frequencies:
All frequencies:
0.25 × T
1.25 × T
0.25 × T
1.25 × T
2.25 × T
1.25 × T
2.25 × T
WS × T
1.5 × T
Expression
[1 ≤ WS ≤ 3]
[4 ≤ WS ≤ 7]
[2 ≤ WS ≤ 3]
[1 ≤ WS ≤ 3]
[4 ≤ WS ≤ 7]
[4 ≤ WS ≤ 7]
100 MHz:
100 MHz:
100 MHz:
[WS ≥ 8]
[WS = 1]
[WS ≥ 4]
[WS = 1]
[WS ≥ 4]
[WS ≥ 8]
[WS ≥ 8]
C
C
C
C
C
C
C
C
C
− 4.0
− 4.0
− 2.0
− 2.0
− 2.0
− 2.0
− 2.0
− 4.0
− 4.0
C
C
C
C
− 4.0
− 4.0
− 4.0
2
− 4.0
106.0
16.0
56.0
10.5
11.0
16.0
31.0
10.5
20.5
18.5
Min
0.5
0.5
8.5
100 MHz
1
Max
—
—
—
—
—
—
—
---
—
—
—
—
—
Freescale Semiconductor
12.0
46.0
87.0
12.7
25.2
16.7
14.7
Min
0.1
8.4
8.5
0.1
8.4
6.4
120 MHz
Max
—
—
—
—
—
—
—
—
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns