參數資料
型號: DSP1628
英文描述: TVS 400W 60V BIDIRECT SMA
中文描述: 澄清,串行I /設備的DSP1620/27/28/29 O控制注冊說明
文件頁數: 96/114頁
文件大?。?/td> 804K
代理商: DSP1628
Preliminary Data Sheet
February 1997
DSP1628 Digital Signal Processor
Lucent Technologies Inc.
94
10 Timing Characteristics for 2.7 V Operation
(continued)
* W = number of wait-states.
Figure 19. External Memory Data Read Timing Diagram
Table 80. Timing Characteristics for External Memory Access
Abbreviated Reference
t127
t128
Parameter
Min
Max
2.5
Unit
ns
ns
Enable Width (low to high)
Address Valid (enable low to valid)
T(1 + W) – 1.5
Table 81. Timing Requirements for External Memory Read (EROM, ERAMHI, IO, ERAMLO)
Abbreviated
Reference
Parameter
19.2 ns
12.5 ns
Unit
Min
15
0
Max
Min
13
0
Max
t129
t130
t150
Read Data Setup (valid to enable high)
Read Data Hold (enable high to hold)
External Memory Access Time (valid to valid)
ns
ns
ns
T(1 + W) – 15
T(1 + W) – 14
V
IH
V
IL
DB
CKO
AB
V
OH
V
OL
t128
READ ADDRESS
ENABLE
V
OH
V
OL
V
OH
V
OL
(MWAIT = 0x2222)
W* = 2
t127
t129
t130
READ DATA
t150
5-4021 (C).a
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