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參數(shù)資料
型號: W99681CF
廠商: WINBOND ELECTRONICS CORP
英文描述: JPEG USB Dual Mode Camera Chip(運(yùn)用JPEG壓縮技術(shù)、通用串行總線結(jié)構(gòu)技術(shù)、雙制式的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
中文描述: JPEG格式相機(jī)的USB雙模芯片(運(yùn)用的JPEG壓縮技術(shù),通用串行總線結(jié)構(gòu)技術(shù),雙制式的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
文件頁數(shù): 67/78頁
文件大小: 816K
代理商: W99681CF
W99681CF
Publication Release Date: March 2000
- 67 - Revision A1
JIMG_SIZE[15:0]
Bits 15-0 JPEG Image Size Low
A 21-bit value specifies the JPEG compressed image size in WORD. It is used by the
microcontroller to determine starting address for the next still image. This register contains
the 16 lower-order bits of the value. Bits 20-16 are located at CR3B_4-0.
JPEG Image Size High Register (CR3B)
Read-only
Power-on Default:
Index: 003BH
XXXXH
uC Address: 76H - 77H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
JIMG_SIZE _SIZE[20:16]
Bits 15-5 Reserved
Bits 4-0
JPEG Image Size High
This register contains the 4 high-order bits of the JPEG Image Size.
USB FIFO Enable and Threshold Register (CR3C)
Read/Write
Power-on Default:
Index: 003CH
0A05H
uC Address: 78H - 79H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
UEN
Reserved
USB_HT[3:0]
Reserved
USB_LT[3:0]
Bit 15
USB Isochronous Pipe Transfer Enable
0 = Disable
1 = Enable
Bits 14-12 Reserved
Bits 11-8 USB FIFO High Threshold
Bits 7-4
Reserved
Bits 3-0
USB FIFO Low Threshold
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