SM320C6424-EP_14 Datasheet, PDF (168/237 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSOR

SM320C6424-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS580 – JUNE 2009
www.ti.com
Table 6-25. Switching Characteristics Over Recommended Operating Conditions for Asynchronous
Memory Cycles for EMIFA Module (see Figure 6-14 and Figure 6-15) (continued)
NO
.
PARAMETER
24 t_w(EMWEL)
EM_WE active low width
25
t_{d(EMWAITH-EMWEH)}
Delay time from EM_WAIT deasserted
to EM_WE high
26 t_{su(EMDV-EMWEL)}
Output setup time, EM_D[15:0] valid to
EM_WE low
27 t_{h(EMWEH-EMDIV)}
Output hold time, EM_WE high to
EM_D[15:0] invalid
-7/-6/-5/-4
-L/-Q6/-Q5/-Q4
UNIT
MIN
NOM
MAX
(WST + 1) * E⁽³⁾
ns
4E + 4 ns
(WS + 1) * E - 4
(WS + 1) * E + 4 ns
(WH + 1) * E - 4
(WH + 1) * E + 4 ns
EM_CS[5:2]
EM_R/W
EM_BA[1:0]
EM_A[21:0]
4
8
6
EM_OE
EM_D[15:0]
3
1
10
12
5
9
7
13
EM_WE
Figure 6-14. Asynchronous Memory Read Timing for EMIF
168 Peripheral Information and Electrical Specifications
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