W99681CF Datasheet, PDF (66/78 Pages) Winbond – JPEG USB Dual Mode Camera Chip

W99681CF
Bits 14-6 Reserved
Bits 5-0
Vertical Up-scaling Factor
Up-scaling ratio (Scaled Height/Original Height) = 1.x, where x = Vertical Up-scaling
Factor/64. The maximum 2× up-scaling will be done if 0 is programmed.
JPEG Encoder Control Register (CR39)
Read/Write
Index: 0039H
Power-on Default: 0000H
15 14 13 12 11 10
Reserved
uC Address: 72H - 73H
9876543210
QRD Reserved JCLK Test TEN JEN R
Bits 15-9 Reserved
Bit 8
JPEG Quantization Table Registers (CR40 ~ CR7F) Read Enable
0 = Disable
1 = Enable
Bits 7-5 Reserved
Bit 4
JPEG Clock Enable (Must be enabled before JPEG Q-table access or encoding)
0 = Disable
1 = Enable
Bit 3
JPEG Test (used for test mode only)
Bit 2
JPEG Test Mode Enable
0 = Disable
1 = Enable
Bit 1
JPEG Encoder Enable
0 = Disable
1 = Enable
Bit 0
Reserved
JPEG Image Size Low Register (CR3A)
Read-only
Index: 003AH
uC Address: 74H - 75H
Power-on Default: XXXXH
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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