Specifications
External Memory Expansion Port (Port A)
MOTOROLA
DSP56367
3-41
186
CAS assertion to data not valid (write)
t
DH
6.25
×
T
C
−
4.0
48.1
—
ns
187
RAS assertion to data not valid (write)
t
DHR
9.75
×
T
C
−
4.0
77.2
—
ns
188
WR assertion to CAS assertion
t
WCS
9.5
×
T
C
−
4.3
74.9
—
ns
189
CAS assertion to RAS assertion (refresh)
t
CSR
1.5
×
T
C
−
4.0
8.5
—
ns
190
RAS deassertion to CAS assertion (refresh)
t
RPC
4.75
×
T
C
−
4.0
35.6
—
ns
191
RD assertion to RAS deassertion
t
ROH
15.5
×
T
C
−
4.0
125.2
—
ns
192
RD assertion to data valid
t
GA
14
×
T
C
−
5.7
—
111.0
ns
193
RD deassertion to data not valid
3
t
GZ
0.0
—
ns
194
WR assertion to data active
0.75
×
T
C
−
0.3
5.9
—
ns
195
WR deassertion to data high impedance
0.25
×
T
C
—
2.1
ns
Note:
1.
The number of wait states for out-of-page access is specified in the DCR.
2.
The refresh period is specified in the DCR.
3.
RD deassertion will always occur after CAS deassertion; therefore, the restricted timing is
t
OFF
and not t
GZ
.
4.
Either t
RCH
or t
RRH
must be satisfied for read cycles.
Table 3-16 DRAM Out-of-Page and Refresh Timings, Fifteen Wait States
No.
Characteristics
3
Symbol
Expression
Min
Max
Uni
t
Содержание DSP56367
Страница 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Страница 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
Страница 26: ...xxvi MOTOROLA List of Tables Table Number Title Page Number ...
Страница 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Страница 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Страница 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Страница 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Страница 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Страница 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Страница 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Страница 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Страница 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Страница 522: ...Index 6 MOTOROLA Index ...
Страница 523: ......