at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 253

• Manufacturer Part Number: at85c51snd3
• Description: At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

PSI Interface
Definition of Symbols
7632D–MP3–01/07
Figure 147. LCD 6800 Write Cycle Waveform
Figure 148. LCD 6800 Read Cycle Waveform
Table 285. PSI Interface Timing Symbol Definitions
D
Q
A
R
W
E
LWR/LRW
LRD/LRW
LRD/LDE
LRD/LDE
LA0/LRS
LA0/LRS
LD7:0
LD7:0
LCS
LCS
Signals
SD7:0 In
SD7:0 Out
SA0
SRD
SWR
SCS
t
t
AVEH
AVEH
t
t
SLDV
AVDV
t
EHDV
t
SLEL
t
t
t
EHEL
QVEL
EHEL
Data
Data
H
L
V
X
Z
t
t
t
ELSH
ELAX
ELQX
t
t
ELDX
ELDZ
t
SHDZ
Conditions
High
Low
Valid
No Longer Valid
Floating
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