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參數資料
| 型號： | AD9943 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 消費家電 |
| 英文描述： | Label Printer Tape RoHS Compliant: NA |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, QCC32 |
| 封裝： | 5 X 5 MM, MO-220-VHHD-2, LFCSP-32 |
| 文件頁數： | 14/20頁 |
| 文件大小： | 485K |
| 代理商： | AD9943 |
AD9943/AD9944
SERIAL INTERFACE
Rev. B | Page 14 of 20
t
LS
t
LH
SDATA
SCK
SL
TEST BIT
A2
0
A0
A1
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
t
DS
t
DH
NOTES
1. SDATA BITS ARE INTERNALLY LATCHED ON THE RISING EDGES OF SCK.
2. SYSTEM UPDATE OF LOADED REGISTERS OCCURS ON SL RISING EDGE.
3. ALL 12 DATA BITS D0–D11 MUST BE WRITTEN. IF THE REGISTER CONTAINS FEWER THAN 12 BITS, ZEROS SHOULD BE USED
FOR THE UNDEFINED BITS.
4. TEST BIT IS FOR INTERNAL USE ONLY AND MUST BE SET LOW.
D11
0
Figure 10. Serial Write Operation
SDATA
A0
A1
A2
D0
D1
D2
D3
D4
D5
D10
D11
SCK
SL
0
NOTES
1. MULTIPLE SEQUENTIAL REGISTERS MAY BE LOADED CONTINUOUSLY.
2. THE FIRST (LOWEST ADDRESS) REGISTER ADDRESS IS WRITTEN, FOLLOWED BY MULTIPLE 12-BIT DATA-WORDS.
3. THE ADDRESS AUTOMATICALLY INCREMENTS WITH EACH 12-BIT DATA-WORD. (ALL 12 BITS MUST BE WRITTEN.)
4. SL IS HELD LOW UNTIL THE LAST DESIRED REGISTER HAS BEEN LOADED.
5. NEW DATA IS UPDATED AT THE NEXT SL RISING EDGE.
D0
D1
D10
D11
D0
...
...
...
DATA FOR STARTING
REGISTER ADDRESS
DATA FOR NEXT
REGISTER ADDRESS
D2
D1
...
1
16
2
3
4
5
6
7
8
9
10
15
18
17
28
27
30
29
31
TEST
BIT
0
Figure 11. Continuous Serial Write Operation to All Registers
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