3 ac characteristics, 1 ebi/sdram interface ac characteristics, 2 ebi/external master interface ac characteristics – Rainbow Electronics W90N740 User Manual
Page 201
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W90N740
Publication Release Date: November 26, 2004
- 197 -
Revision A4
8.3 AC
Characteristics
8.3.1 EBI/SDRAM Interface AC Characteristics
MCLK
D[31:0]
Input Valid
1.5V
1.5V
1.5V
T
DSU
T
DH
MCLK
Output
Delay
Output Valid
1.5V
1.5V
T
DO
SYM. PARAMETER MIN.
MAX.
UNIT
T
DSU
D [31:0] Setup Time
2
nS
T
DH
D [31:0] Hold Time
3
nS
T
DO
D [31:0], A [24:0], nSCS [1:0], SDQM [3:0], CKE, nSWE, nSRAS, nSCAS
2
7
nS
8.3.2 EBI/External Master Interface AC Characteristics
MCLK
T
EMSU
EMREQ
EMACK
T
EMAO
T
EMH
T
EMAO
SYM. DESCRIPTION
MIN.
MAX.
UNIT
T
EMSU
EMREQ Setup Time
2
nS
T
EMH
EMREQ Hold Time
3
nS
T
EMAO
EMACK Output Delay Time
4
7
nS
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