Motorola DSP56367 User Manual page 91

Table 3-10 DRAM Page Mode Timings, Two Wait States (Continued)
No. Characteristics
132 CAS assertion to data valid
(read)
133 Column address valid to data
valid (read)
134 CAS deassertion to data not
valid (read hold time)
135 Last CAS assertion to RAS
deassertion
136 Previous CAS deassertion to
RAS deassertion
137 CAS assertion pulse width
138 Last CAS deassertion to RAS
5
deassertion
• BRW[1:0] =
00
• BRW[1:0] =
01
• BRW[1:0] =
10
• BRW[1:0] =
11
139 CAS deassertion pulse width
140 Column address valid to CAS
assertion
141 CAS assertion to column
address not valid
142 Last column address valid to
RAS deassertion
143 WR deassertion to CAS
assertion
144 CAS deassertion to WR
assertion
MOTOROLA
External Memory Expansion Port (Port A)
Symbol Expression
1.5 × T − 7.5
t
CAC C
1.5 × T − 6.5
C
2.5 × T − 7.5
t
AA C
2.5 × T − 6.5
C
t
OFF
1.75 × T − 4.0
t
RSH C
3.25 × T − 4.0
t
RHCP C
1.5 × T − 4.0
t
CAS C
2.0 × T − 6.0
t
CRP C
3.5 × T − 6.0
C
4.5 × T − 6.0
C
6.5 × T − 6.0
C
1.25 × T − 4.0
t
CP C
− 4.0
t T
ASC C
1.75 × T − 4.0
t
CAH C
3 × T − 4.0
t
RAL C
1.25 × T − 3.8
t
RCS C
0.5 × T − 3.7
t
RCH C
DSP56367
Specifications
66 MHz 80 MHz
Min Max Min Max
— 15.2 — —
— — — 12.3
— 30.4 — —
— — — 24.8
0.0 — 0.0 —
22.5 — 17.9 —
45.2 — 36.6 —
18.7 — 14.8 —
24.4 — 19.0 —
47.2 — 37.8 —
62.4 — 50.3 —
92.8 — 75.3 —
14.9 — 11.6 —
11.2 — 8.5 —
22.5 — 17.9 —
41.5 — 33.5 —
15.1 — 11.8 —
3.9 — 2.6 —
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3-25