W99681CF Datasheet, PDF (65/78 Pages) Winbond – JPEG USB Dual Mode Camera Chip

W99681CF
Power-on Default: 0000H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Restart Interval
Bits 15-0 Restart Interval
Specifies the number of MCU (Minimum Coded Unit) in the restart interval. Restart interval
processing is disabled if this value is 0.
VLE FIFO Threshold Register (CR37)
Read/Write
Power-on Default:
15 14 13
Reserved
Index: 0037H
0804H
12 11 10 9
VLE_HT[3:0]
uC Address: 6EH - 6FH
87654
Reserved
3210
VLE_LT[3:0]
Bits 15-12 Reserved
Bits 11-8 VLE FIFO High Threshold
When VLE FIFO is filled with JPEG coded bitstream to this threshold, a request is
generated to the DRAM controller for DRAM access. Initial value is 08H.
Bits 7-4 Reserved
Bits 3-0
VLE FIFO Low Threshold
When VLE FIFO is fetched to this threshold by DRAM controller, the FIFO is ready to
release DRAM access to other pending requests. Initial value is 04H.
Vertical Up-scaling Control Register (CR38)
Read/Write
Power-on Default:
15 14 13
EN
Index: 0038H
0000H
12 11 10 9
Reserved
uC Address: 70H - 71H
876543210
Vertical Up-scaling Factor
Bit 15
Vertical Up-scaling Enable
0 = Disable
1 = Enable
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Publication Release Date: March 2000
Revision A1