GL842 USB 2.0 2-in-1 Scanner Controller
TABLE OF CONTENTS
CHAPTER 1
CHAPTER 2
CHAPTER 3
GERERAL DESCRIPTION........................................................................ 6
FEATURES ................................................................................................... 7
PIN ASSIGNMENT...................................................................................... 8
3.1 P
INOUTS
......................................................................................................................... 8
3.2 P
IN
L
IST
.......................................................................................................................... 9
3.3 P
IN
D
ESCRIPTIONS
....................................................................................................... 10
CHAPTER 4
REGISTERS ............................................................................................... 14
4.1 R
EGISTERS
B
ASE
A
DDRESS
.......................................................................................... 14
4.2 R
EGISTER
D
ESCRIPTIONS
............................................................................................ 18
4.3 R
EGISTER
M
APPING
.................................................................................................... 52
4.3.1 Shading Mapping (Chunky for Single Bank)................................................... 52
4.3.2 Shading Mapping (Planer)................................................................................. 52
4.3.3 Slope Curve Table Mapping .............................................................................. 53
4.3.4 Image Buffer Mapping ....................................................................................... 53
CHAPTER 5
BLOCK DIAGRAM................................................................................... 54
5.1 USB2.0 S
YSTEM
B
LOCK
D
IAGRAM
............................................................................. 54
5.2 F
UNCTION
B
LOCK
D
IAGRAM
....................................................................................... 54
CHAPTER 6
FUNCTIONAL DESCRIPTION............................................................... 55
CHAPTER 7 ELECTRICAL CHARACTERISTICS .................................................... 62
7.1 A
BSOLUTE
M
AXIMUM
R
ATINGS
(V
OLTAGE
R
EFERENCED TO
GND)........................ 62
7.2 DC C
HARACTERISTICS
(D
IGITAL
P
INS
): 3.3 V L
OGIC
C
ORE OR
P
ADS
..................... 62
7.3 DC C
HARACTERISTICS
(D
IGITAL
P
INS
): 5.0 V P
ADS
................................................. 63
7.4 DC C
HARACTERISTICS
(D+/D-) .................................................................................. 63
CHAPTER 8 PACKAGE DIMENSION.......................................................................... 64
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