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參數資料
型號: W99681CF
廠商: WINBOND ELECTRONICS CORP
英文描述: JPEG USB Dual Mode Camera Chip(運用JPEG壓縮技術、通用串行總線結構技術、雙制式的照相電路數字處理芯片的攝像照相機接口控制器)
中文描述: JPEG格式相機的USB雙模芯片(運用的JPEG壓縮技術,通用串行總線結構技術,雙制式的照相電路數字處理芯片的攝像照相機接口控制器)
文件頁數: 68/78頁
文件大小: 816K
代理商: W99681CF
W99681CF
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USB Isochronous Transfer Size Low Register (CR3D)
Read/Write
Power-on Default:
Index: 003DH
XXXXH
uC Address: 7AH - 7BH
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ISO_SIZE[15:0]
Bits 15-0 USB Isochronous Transfer Size Low
A 21-bit value specifies the USB Isochronous Transfer Size in WORD for the original video
transfer or the still image transfer. It is not used for the JPEG compression video transfer
mode (CR39_1 = 1). This register contains the 16 lower-order bits of the value. Bits 20-16
are located at CR3E_4-0.
USB Isochronous Transfer Size High Register (CR3E)
Read/Write
Power-on Default:
Index: 003EH
XXXXH
uC Address: 7CH - 7DH
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
ISO_SIZE[20:16]
Bits 15-5 Reserved
Bits 4-0
USB Isochronous Transfer Size High
This register contains the 4 high-order bits of the USB Isochronous Transfer Size. It is not
used for the JPEG compression video transfer mode (CR39_1 = 1).
JPEG/MCTL Test Data Register (CR3F)
Read/Write
Power-on Default:
Index: 003FH
XXXXH
uC Address: 7EH - 7FH
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
JPEG/MCTL Test Data
Bits 15-0 JPEG/MCTL Test Data (used for test mode only)
JPEG Luminance Quantization Table Registers (CR40 -- CR5F)
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參數描述
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