Motorola DSP56367 User Manual page 84

Specifications
External Memory Expansion Port (Port A)
Table 3-8 SRAM Read and Write Accesses (Continued)
No. Characteristics
105 RD assertion to input data valid
106 RD deassertion to data not valid (data hold time)
107
Address valid to WR deassertion
108 Data valid to WR deassertion (data setup time)
109 Data hold time from WR deassertion
110 WR assertion to data active
111 WR deassertion to data high impedance
112 Previous RD deassertion to data active (write)
3-18
Symbol
t
OE
t
OHZ
2 t
AW
t (t )
DS DW
t
DH
—
—
—
DSP56367
1
Min
Expression
(WS + 0.25) × T − 7.0
C
[WS ≥ 1]
0.0
(WS + 0.75) × T − 4.0
10.6
C
[WS ≥ 1]
(WS − 0.25) × T − 3.0
3.2
C
[WS ≥ 1]
0.25 × T − 2.0
0.1
C
[1 ≤ WS ≤ 3]
1.25 × T − 2.0
8.4
C
[4 ≤ WS ≤ 7]
2.25 × T − 2.0
16.7
C
[WS ≥ 8]
0.75 × T − 3.7
2.5
C
[WS = 1]
0.25 × T − 3.7
0.0
C
[2 ≤ WS ≤ 3]
−0.25 × T − 3.7
0.0
C
[WS ≥ 4]
0.25 × T
+ 0.2
C
[1 ≤ WS ≤ 3]
1.25 × T
+ 0.2
C
[4 ≤ WS ≤ 7]
2.25 × T
+ 0.2
C
[WS ≥ 8]
1.25 × T − 4.0
6.4
C
[1 ≤ WS ≤ 3]
2.25 × T − 4.0
14.7
C
[4 ≤ WS ≤ 7]
3.25 × T − 4.0
23.1
C
[WS ≥ 8]
Uni
Max
t
— 3.4 ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
—
—
— 2.3 ns
— 10.6
— 18.9
— ns
—
—
MOTOROLA