GL848 datasheet(36/85 Pages) GENESYS

36 / 85 page

GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF

Page 36

CCD TG

CCD clock

CCD pixel no: N-1

For example, start pixel is 65 ,end pixel is 100 and CCD dummy pixel is 64,

Then STRPIXEL = (TGW+2*TGSHLD) + 65.

ENDPIXEL= (TGW+2*TGSHLD) + 100.

DUMMY = (TGW+2*TGSHLD) + 64.

Offset 35h ……..…..……………………..………..….………..….…..…….…. Default value = 8’h00

MAXWD25 MAXWD24 MAXWD23 MAXWD22 MAXWD21 MAXWD20 MAXWD19 MAXWD18

R/W

7-0 MAXWD [25:18] Maximum word size per line for ASIC estimation. The unit is 4 words.

If available buffer size < MAXWD, then “buffer full” state will be set. The

scanner execute backtracking.

Offset 36h …….……..……………………..………..….………..….…..…….…. Default value = 8’h00

MAXWD17 MAXWD16 MAXWD15 MAXWD14 MAXWD13 MAXWD12 MAXWD11 MAXWD10

R/W

7-0 MAXWD [17:10]

Maximum word size per line for ASIC estimation. The unit is 4 words.

If available buffer size < MAXWD, then “buffer full” state will be set. The

scanner execute backtracking.

Offset 37h …….……..……………………..………..….………..….…..…….…. Default value = 8’h00

MAXWD9 MAXWD8 MAXWD7 MAXWD6 MAXWD5 MAXWD4 MAXWD3 MAXWD2

R/W

7-0 MAXWD [9:2] Maximum word size per line for ASIC estimation. The unit is 4 words.

If available buffer size < MAXWD, then “buffer full” state will be set. The

scanner execute backtracking.

Offset 38h …….……..……………………..………..….………..….……..……. Default value = 8’h2A

LPERIOD15 LPERIOD14 LPERIOD13 LPERIOD12 LPERIOD11 LPERIOD10

LPERIOD9 LPERIOD8

R/W

7-0 LPERIOD [15:8] Line period (or exposure time) for CCD or CIS.

Unit : pixel count

Note: It cannot be programmed to logic zero.

Offset 39h ……….…..……………………..………..….………..………………. Default value = 8’h30

LPERIOD7 LPERIOD6 LPERIOD5 LPERIOD4 LPERIOD3 LPERIOD2 LPERIOD1 LPERIOD0

GL848 Datasheet(PDF) 36 Page - GENESYS LOGIC