W99681CF Datasheet, PDF (67/78 Pages) Winbond – JPEG USB Dual Mode Camera Chip

W99681CF
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:
15 14 13
Index: 003BH
XXXXH
12 11 10 9
Reserved
uC Address: 76H - 77H
876543210
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
Index: 003CH
uC Address: 78H - 79H
Power-on Default: 0A05H
15 14 13 12 11 10 9 8 7 6 5 4
UEN Reserved
USB_HT[3:0]
Reserved
3210
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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Publication Release Date: March 2000
Revision A1