dsp56366 Freescale Semiconductor, Inc, dsp56366 Datasheet - Page 57

• Manufacturer Part Number: dsp56366
• Description: Dsp56366 24-bit Audio Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
157
158
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160
161
162
163
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166
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168
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174
175
176
177
178
179
180
181
182
183
No.
Random read or write cycle time
RAS assertion to data valid (read)
CAS assertion to data valid (read)
Column address valid to data valid (read)
CAS deassertion to data not valid (read hold time)
RAS deassertion to RAS assertion
RAS assertion pulse width
CAS assertion to RAS deassertion
RAS assertion to CAS deassertion
CAS assertion pulse width
RAS assertion to CAS assertion
RAS assertion to column address valid
CAS deassertion to RAS assertion
CAS deassertion pulse width
Row address valid to RAS assertion
RAS assertion to row address not valid
Column address valid to CAS assertion
CAS assertion to column address not valid
RAS assertion to column address not valid
Column address valid to RAS deassertion
WR deassertion to CAS assertion
CAS deassertion to WR
RAS deassertion to WR
CAS assertion to WR deassertion
RAS assertion to WR deassertion
WR assertion pulse width
WR assertion to RAS deassertion
Table 3-16 DRAM Out-of-Page and Refresh Timings, Fifteen Wait States
Characteristics
4
5
assertion
assertion
3
DSP56366 Technical Data, Rev. 3.1
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WCH
WCR
RCD
RCH
RRH
t
RWL
t
RAC
CAC
t
OFF
t
RAS
RSH
CSH
CAS
RAD
CRP
t
ASR
RAH
ASC
CAH
t
RCS
RAL
WP
RC
AA
RP
CP
AR
15.75 × T
8.25 × T
4.75 × T
6.25 × T
9.75 × T
6.25 × T
8.25 × T
4.75 × T
7.75 × T
6.25 × T
6.25 × T
2.75 × T
0.75 × T
6.25 × T
9.75 × T
1.75 × T
0.25 × T
15.5 × T
5.5 × T
9.5 × T
2.75 × T
Expression
3.5 × T
7 × T
5 × T
6 × T
16 × T
0.0
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
− 4.0
− 3.8
− 4.2
C
C
− 5.7
− 4.2
C
− 5.7
− 5.7
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 4.0
− 3.7
− 2.0
− 4.5
± 2
− 4.3
± 2
133.3
124.7
126.9
48.1
77.2
48.1
64.7
35.6
27.2
20.9
60.6
48.1
48.1
18.9
48.1
77.2
54.3
37.9
10.9
45.8
75.0
Min
0.0
2.2
0.1
—
—
—
1, 2
Max
63.0
33.9
40.1
31.2
24.9
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3-31