GENESYS GL841 Datasheet

GL841 USB 2.0 2-in-1 Scanner Controller

7 Version 1.6

Genesys Logic, Inc.

GL841
High Speed USB 2.0
Two-in-one Scanner Controller

SPECIFICATION Ver. 1.6

June 11, 2002

Genesys Logic, Inc.

10F, No.11, Ln. 155, Sec. 3, Peishen Rd., Shenkeng, Taipei, Taiwan
Tel: [phone] Fax: [phone]

http://www.genesyslogic.com

GL841 USB 2.0 2-in-1 Scanner Controller

Version 1.6

2

INDEX

1

General Description.............................................................................................................................. 3

2 Feature................................................................................................................................................... 3

3 System Block Diagram......................................................................................................................... 5

4 Function Block Diagram......................................................................................................................6

5 Hardware description........................................................................................................................... 7

6 Application Description ..................................................................................................................... 14

7 Command set descriptions................................................................................................................. 23

8 Package…………………………………………….………………………………………………….48

GL841 USB 2.0 2-in-1 Scanner Controller

Version 1.6

3

1 GENERAL DESCRIPTION

Genesys Logic's single-chip GL841 (GeneScan™ series) is a high speed, high
performance, low cost and rich scalability controller for scanner. It successfully
integrates scanner function ASIC and USB 2.0 interface controller into one
single-chip. With its high performance design architecture, GL841 is not only
ready for supporting CIS or CCD image sensors (600dpi,1200dpi or 2400dpi
resolution) that are used in flatbed or transparency scanners, but is able to co­work with uni-polar or bi-polar stepping motors. Advanced features of GL841
include five motor acceleration/ deceleration curve tables for high speed motor
moving.

2 FEATURES

! Highly integrated scanner controller chip. (2-in-1; Scanner Controller and USB

2.0 Interface)

! USB 2.0 High Speed (480Mbit) compliance. (USB 2.0 High Speed logo certified)
! Design for sheetfed, flatbed and transparency scanner.

! 12 Mhz Low frequency clock input required for better EMI.
! Flexible 3.3V/5V power selection for pad I/O.
! Adjustable working speed for different usage.
! Fast operation speed. (0.3us/pixel, in 40MHz working clock)
! It costs only 12 seconds for 600dpi A4 size color scanning
! Available sensor types: 600, 1200 and 2400dpi color CIS or CCD.

! Support linear or stagger CCD , such as NEC , Toshiba or Sony CCD
! Support 48-Bits color (16-Bits gray level ) scanning.
! Support color, fine Gray, fast gray and fast B/W scan for CCD.

! Support color,, gray, true gray and B/W scan for CIS.
! Support three scanning types :pixel by pixel(pixel rate), line by line(line rate) and

RGB line by turns(line rate).

! 16 bits white/dark shading and 16-to-8 bits Gamma correction.
! Support digital average and hardware deletion pixel function for speeding up low

resolution scan.

GL841 USB 2.0 2-in-1 Scanner Controller

Version 1.6

4

! Support hardware deletion type for DPI function (2400 to 1 DPI ,1 DPI

decrement) .

! Programmable threshold level for B/W.
! Exposure time is adjustable (1 pixel time increment step).
! Scan width (scan area) control for horizontal line( 1 pixel increment step).

! Support 256K*16, 256K*16*2 and 1M*16 bits EDO-DRAM.
! Support 5 acceleration/deceleration motor tables for detailed controllable high

speed motor moving.

! Support controllableg bipolar motor in full, half and quarter steps moving.
! Support controllable uni-polar motor in full and half steps moving.
! Build-in PWM control phase for uni-polar motor.

! Programmable dummy lines to resolve start/stop (discontinuous) problem.
! Watch dog protect for lamp, motor and ASIC.
! Lamp timeout (sleeping) control.
! Support 16 GPIO pins and 2 GPO pins.
! Output motor trigger signal under scanning for ADF.

! 2 Output ports for lamp(include flatbed and transparency with PWM) control.
! Input port for home sensor.
! Power on check status.
! Support LED Blinking.
! Support Back Scanning.

GL841 USB 2.0 2-in-1 Scanner Controller

Version 1.6

5

3 SYSTEM BLOCK DIAGRAM

A. USB 2.0 System Block Diagram

Host

12 MHz

GL841
(USB2.0 Interface + Scanner ASIC

Controller)

Two-In-One Controller

DRAM

CCD/CIS

Motor Driver

IO Device

AFE

GL841 USB 2.0 2-in-1 Scanner Controller

Version 1.6

6

4 FUNCTION BLOCK DIAGRAM

HOST

Motor

control

A/D data

latch

Motor
Driver

12MHz

I/O

CCD/
CIS

CCD/CIS

control

Front-

End(16

Bits)

Dark

Shading

process

White

Shading

process

Shading ,Image and Motor Table DRAM
(256K*16*1) , (256K*16*2) or (1M*16)

Data

Packing

Average

Control

Gamma

Correcion

Black &

White

DPI

control

PLL

watchdog

GPIO

control

EPP

Circuit

Register Write

& Status read

Motor

Moving

Table

Data

Interface

Clk-gen

USB 2.0

Controller

Scanner
Flow
Control

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

7 Version 1.6

5 HARDWARE DESCRIPTION

5.1 Pins Assignment & Mode Definition:

SC+USB2.0

ASIC I/O

Cell

TSTSEL[1:0]=0

1

AVCC1 P

2 X2

I/O

3 X1

I

4

AGND1 P

5

DVCC1 P

6

DGND1 P

7 GPIO1

I/O

hbd16rsc

8 GPIO2 I/O hbd16rsc

9 GPIO3 I/O hbd16rsc

10 GPIO4 I/O hbd16rsc

11 GPIO5 I/O hbd16rsc

12 GPIO6 I/O hbd16rsc

13 GPIO7 I/O hbd16rsc

14 GPIO8 I/O hbd16rsc

15 GPIO9 I/O hbd16rsc

16 GPIO10 I/O hbd16rsc

17 GPIO11 I/O hbd16rsc

18 GPIO12 I/O hbd16rsc

19

GPIO13

I/O hbd16rsc

20

GPIO14 I/O

hbd16rsc

21

VccCore1 P

22

GndCore1 P

23

GPIO15 I/O

hbd16rsc

24

GPIO16 I

hbd16rsc

25

Vccio1 P

26

Gndio1 P

27 MTR_SEL0

I

hbd16rsc

28 MTR_SEL1

I

hbd16rsc

29

LAMP_SW O

hbd16rsc

30

XPA_SW O

hbd16rsc

31

LED_B O

hbd16rsc

32 MT_PH0 O hbd16dhk

33 MT_PH1 O hbd16dhk

34 MT_PH2

O

hbd16dhk

35 MT_PH3 O hbd16dhk

36 MT_PH4 O hbd16dhk

37 MT_PH5

I/O

hbd16rsc

38 MT_PH6 O hbd16rsc

39 MT_PH7 O hbd16rsc

40

OP0 I

hbd16dhk

41

OP1 I

hbd16dhk

42

OP2 I

hbd16dhk

43

OP3

I hbd16dhk

44

OP4

I hbd16dhk

45

OP5

I hbd16dhk

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

8

46

OP6 I

hbd16dhk

47

OP7 I

hbd16dhk

48

Vccio2 P

49

Gndio2 P

50

SDO I

hbd16dhk

51

SDI O

hbd16dhk

52

VccCore2 P

53

GndCore2 P

54

SCLK O

hbd16rsc

55

SEN O

hbd16dhk

56

BSMP O

hbd16rsc

57 VSMP O hbd16rsc

58 MCLK O hbd16rsc

59 CCD_TGX O hbd16rsc

60 CCD_CK1X O hbd16rsc

61 CCD_CK3X

O

hbd16rsc

62 CCD_CPX O hbd16rsc

63

Vccio3 P

64

Gndio3 P

65 CCD_RSX O hbd16rsc

66

HOME I

hbd16uhk

67 CCD_CK2X O hbd16rsc

68 CCD_CK4X

O

hbd16rsc

69 CCD_TGG O hbd16rsc

70 CCD_TGB O hbd16rsc

71 CASY O hbd16rsc

72 RASY O

hbd16rsc

73 NOEY O hbd16rsc

74

Vccio4 P

75

Gndio4 P

76 NWEY O hbd16rsc

77 CASX O hbd16rsc

78 RASX O hbd16rsc

79 NOEX O hbd16rsc

80 NWEX O hbd16rsc

81 ABUS0 O

hbd16rsc

82

VccCore3 P

83

GndCore3 P

84 ABUS1 O

hbd16rsc

85 ABUS2 O

hbd16rsc

86 ABUS3 O

hbd16rsc

87 ABUS4 O

hbd16rsc

88 ABUS5 O

hbd16rsc

89 ABUS6 O

hbd16rsc

90

Vccio5 P

91

Gndio5 P

92 ABUS7 O

hbd16rsc

93 ABUS8 O

hbd16rsc

94 ABUS9 O

hbd16rsc

95 DBUS0 I/O hbd16dhk

96 DBUS1 I/O hbd16dhk

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

9

97 DBUS2 I/O hbd16dhk

98 DBUS3 I/O hbd16dhk

99 DBUS4 I/O hbd16dhk

100 DBUS5 I/O hbd16dhk

101 DBUS6 I/O hbd16dhk

102 DBUS7 I/O hbd16dhk

103

Vccio6 P

104

Gndio6 P

105 DBUS8 I/O hbd16dhk

106 DBUS9 I/O hbd16dhk

107 DBUS10 I/O hbd16dhk

108 DBUS11 I/O hbd16dhk

109 DBUS12 I/O hbd16dhk

110 DBUS13 I/O hbd16dhk

111 DBUS14 I/O hbd16dhk

112 DBUS15 I/O hbd16dhk

113

VccCore4 P

114

GndCore4 P

115

TSTSEL0 I

hbd16dhk

116

TSTSEL1 I

hbd16dhk

117 EXTRST_ I hbd8rteu

118 SUSPND O hbd8rted

119

DVCC0 P

120

DGND0 P

121 RPU ?

122 AVDD P

123 DPF I/O

124 DPH I/O

125 DMF I/O

126 DMH I/O

127 AGND

P

128 RREF ?

Note: hbd16dhk is internal pulled down ; hbd16uhk is internal pulled up ; hbd16* is 16mA ; hbd8* is for 8mA

5.2 Pin Descriptions :

Support IO Ports
GPIO1~16 B General Purpose Input/ Output
MT_PH0~7 O Bi-polar (3955): MT_PH7=PHASE_A

MT_PH6=PHASE_B
MT_PH5=D2A
MT_PH4=D1A
MT_PH3=D0A
MT_PH2=D2B
MT_PH1=D1B
MT_PH0=D0B
Bi-polar (2916 or 6219): MT_PH5=PHASE1
MT_PH4=PHASE2
MT_PH3=I11
MT_PH2=I01
MT_PH1=I12

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

10

MT_PH0=I02
Uni-polar(2003) : MT_PH3=PHASE A
MT_PH2=PHASE B
MT_PH1=PHASE /A

MT_PH0=PHASE /B
MOTORTGO(GPIO13) O Output motor trigger for ADF scanning or GPIO13.
HOME I Sense carriage home position
CCD/CIS Control Signals
CCD_CK1X O CCD Shift register clock1 or CIS clock output
CCD_CK2X O CCD Shift register clock2 or CIS clock output
CCD_CPX O CCD Clamp gate clock or CIS clock output
CCD_RSX O CCD Reset gate clock or CIS clock output
CCD_TGX O CCD Transfer gate clock for R channel or CIS Line start pulse
CCD_TGG O CCD Transfer gate clock for G channel
CCD_TGB O CCD Transfer gate clock for B channel
CCD_CK3X O CCD Shift register clock3
CCD_CK4X O CCD Shift register clock4
LAMP_SW O Flatbed lamp power control or CIS Red LED array control
XPA_SW O Transparency lamp power control or CIS Green LED array control
LED_B O CIS Blue LED array control
FRONT-END
OP0~7 I AFE digital data input.
SEN/SLOAD O Serial interface load pulse.
SCLK O Serial interface clock output.
SDI O Serial data output.
SDO I Serial data input.
BSMP/CDSCLK1 O Wolfson type : Video sample synchronization pulse.

Analog Device : CDS Reference level sampling clock.
VSMP/CDSCLK2 O Wolfson type : Video sample synchronization pulse.

Analog Device : CDS Data level sampling clock.
MCLK/ADCCLK O Wolfson type : Master cl ock.

Analog Device : A/D Converter sampling clock.
DRAM
DBUS0~15 B DRAM data bus
ABUS0~9 O DRAM address bus
RASX O DRAM RAS signal of first memory chip
CASX O DRAM CAS signal of first memory chip
NOEX O DRAM OE(output enable) signal of f irst me mo r y ch ip
NWEX O DRAM WE signal of first memory chip
RASY O DRAM RAS signal of second memory chip
CASY O DRAM CAS signal of second memory chip
NOEY O DRAM OE(output enable) signal of secon d memory chip
NWEY O DRAM WE signal of second memory chip
Miscellaneous

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

11

TSTSEL0
TSTSEL1

I To select mode: Normal mode = 00

MTR_SEL1
MTR_SEL0

I

MTR_SEL[1:0]=10 select Bi_polar 3955

MTR_SEL[1:0]=01 select Bi_polar 2916 OR 6219

MTR_SEL[1:0]=00 select Uni_polar 2003
IX1 I Clock input for crystal (12MHz)
IOX2 O Clock output for crystal
EXTRST_ I Hardware reset input
POWER
AVDD,AVCC1 P Analog power input for USB2.0 transceiver 3.3V
AGND,AGND1 P Analog ground input for USB2.0 transceiver
DVCC0,DVCC1 P Digital power input for USB2.0 controller 3.3V
DGND0,DGND1 P Digital ground input for USB2.0 controller.
VccCore1,VccCore2,VccCore3,
VccCore4,DVCC1

P Digital power input for scanner controller logic core 3.3V

GndCore1,GndCore2,GndCore3,
GndCore4,DGND1,DGND0
GndIO1,GndIO2,GndIO3,GndIO4,
GndIO5,GndIO6

P Digital ground input for scanner controller.

VccIO1 P for PIN7~PIN39 3.3V or 5V
VccIO2 P For PIN40~PIN58 3.3V or 5V
VccIO3 P for PIN59~PIN66 3.3V or 5V
VccIO4, VccIO5,VccIO6 P for PIN67~116 3.3V or 5V
VCC0 P for USB2.0 Pads 3.3V
USB Interface

SUSPND

O

USB suspend indicator
RPU - 3.3V Pull up control for DPF
DPF

B

Positive USB differential data (Full Speed)

DPH

B

Positive USB differential data (High Speed)

DMF

B

Negative USB Differential Data (Full Speed)

DMH B

Negative USB Differential Data (High Speed)
RREF - 510Ohm reference resistor input

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

12

5.3 Electrical Characteristics:

5.3.1 Absolute Maximum Ratings (Voltages referenced to GND)

SYMBOL Description MIN MAX

DVCC0
DVCC1

AVDD

AVCC1

VccCore1~4

DC supply voltage -0.5V +3.6V

VccIO1~6 DC supply voltage -0.5V +3.6V or

+5.5V

VI DC input voltage -0.5V VCC+0.5V

V

I/O

DC input voltage range for I/O -0.5V VCC+0.5V

V

AI/O

DC input voltage for USB D+/D- pins -0.5V VCC+0.5V

V

I/OZ

DC voltage applied to outputs in High Z state -0.5V VCC+0.5V

V

ESD

static discharge voltage 4000V

Note : VCC : VccCore,VccIO,DVCC,AVDD or AVCC1

5.3.2 DC Characteristics (Digital Pins) : 3.3 V Logic Core or Pads

SYMBOL Description MIN TYP MAX UNIT

PD Power Dissipation mA
DVCC0
DVCC1

AVDD

AVCC1

VccCore1~4

Power Supply Voltage 3.1 3.3 3.6 V

VccIO1~6 Power Supply Voltage 3.3V 3 3.3 3.6 V

IO DC output sink current excluding D+/D-/VCC/GND 16 or 8 mA
VIL LOW level input voltage 0.9 V
VIH HIGH level i nput voltage 2.0 V

V

TLH

LOW to HIGH threshold voltage 1.3 1.43 1.56 V

V

THL

HIGH to LOW threshold voltage 1.3 1.43 1.56 V

V

HYS

Hysteresis voltage - 0 - V
VOL LOW level output voltage when IOL=16mA 0.4 V
VOH HIGH level output voltage when IOH=16mA 2.4 V
I

OLK

Leakage current for pads with internal pull up or pull

down resistor

46

µA

RDN Pad internal pulldown resister 72.8K 105.7K 167.4K Ohms
RUP Pad internal pullup resister 135.9K 167.8K 212.4K Ohms

Note: hbd16dhk is internal pulled down ; hbd16uhk is internal pulled up ; hbd16* is 16mA ; hbd8* is for 8mA

5.3.2 DC Characteristics (Digital Pins) : 5.0 V Pads

SYMBOL Description MIN TYP MAX UNIT

PD Power Dissipation mA

VccIO1~6 Power Supply Voltage 5.0V 4.5 5.0 5.5 V

IO DC output sink current excluding D+/D-/VCC/GND 16 mA
VIL LOW level input voltage 0.9 V
VIH HIGH level i nput voltage 2.4 V

V

TLH

LOW to HIGH threshold voltage V

V

THL

HIGH to LOW threshold voltage V
VOL LOW level output voltage when IOL=8mA 0.4 V
VOH HIGH level output voltage when IOH=8mA 2.4 V
I

OLK

Leakage current for pads with internal pull up or pull

down resistor

46

µA

RDN Pad internal pulldown resister 104.6K 159.5K 206.6K Ohms
RUP Pad internal pullup resister 81.9K 103.2K 254.6K Ohms

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

13

5.3.3 DC Characteristics (D+/D-)

SYMBOL

Description

MIN TYP

MAX

UNIT

VOL D+/D- static output LOW(RL of 1.5K to 3.6V ) 0.3 V
VOH D+/D- stati c output HIGH (RL of 15K to GND ) 2.8 3.6 V

VDI Differential input sensitivity 0.2 V
VCM Differential common mode range 0.8 2.5 V
VSE Single-ended receiver threshold 0.2 V

CIN Transceiver capacitance 20 pF

ILO Hi-Z state data line leakage -10 +10

µA

Z

DRV

Driver output resistance 28 43 Ohms

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

14

6 Application Description

6.1 System Clock

Internal PLL.

A. PLL : 12MHz input , 24,30,40 MHz output to internal system .

6.2 Pixel Clock

A. Normal mode
Scan mode 0: a. 12 system clock/pixel

(three-line-in or one-line-in) b. Chunky color(three line in),fine-gray or fine-line-art scan
for CCD.

c. Planar color scan (one line in) or Monochrome scan
for CIS

B. Fast mode
Scan mode 4 (one line in) : a. 6 system clock/pixel.

b. Planar color scan (one line in) or Monochrome scan.
c. Fast-gray or fast-line-art scan for CCD.
d. Planar color(one line in),gray, true gray or line-art scan for
CIS.

C. Scan mode 5 (three line in): a. 15 system clock/pixel

b. Chunky color(three line in),fine-gray or fine-line-art scan
for CCD.

c. Planar color scan (one line in) or Monochrome scan

for CIS

D. Scan mode 6 (three line in): a. 18 system clock/pixel

b. Chunky color(three line in),fine-gray or fine-line-art scan
for CCD.

c. Planar color scan (one line in) or Monochrome scan

for CIS

Note : Chunky Color is R1G1B1,R2G2B2,R3G3B3,………(three-line-in or pixel rate)
Planar Color is R1,R2,R3,…..;G1,G2,G3,…….;B1,B2,B3,……..(one-line-in or line rate)
CCD : Chunky color or planar color.
CIS : Planar color

6.3 Scan Speed

A. System clock = 30M Hz :

a. Normal Mode : Chunky color, fine gray or fine line art scan.

(scan mode 0) 12x33.333ns/pixel = 0.4us/pixel

(1). 600dpi : 2.160ms/line,15.163s/page.

GL841 USB 2.0 2-i n -1 Scanner Contr ol ler

Version 1.6

15

(2). 1200dpi : 4.320ms/line,60.653s/page.

b. Fast Mode : Planar color , fast gray or fast line art scan.
(scan mode 4) 6x33.333ns/pixel = 0.2us/pixel

(1). 600dpi : 1.08ms/line,7.582s/page for fast gray or fast line art.
(2). 1200dpi : 2.160ms/line,30.326s/page for fast gray or fast line art.

B. System clock = 40MHz :

a.Normal Mode : Chunky color,fine gray or fine line art scan.

12x25ns/pixel = 0.3us/pixel

(1). 600dpi : 1.620ms/line,11.372s/page.

(2). 1200dpi : 3.240ms/line,45.488s/page.

b.Fast Mode : Planar color , fast gray or fast line art scan.

6x25ns/pixel = 0.15us/pixel
(1). 600dpi : 0.81ms/line,5.616s/page for fast gray or fast line art.
(2). 1200dpi : 1.62ms/line,22.744s/page for fast gray or fast line art.

6.4 Fast scan for low DPI

Speed up CCD clocking rates allows speeding up scanning speed.
Such as Stagger CCD, you can speed up 2 times,4 times scanning time for low resolution as 600dpi
scanner: if 75dpi speed up 4 times then 1.620ms/4=0.405ms/line.
Scan speed is equal to 0.355s/page.

6.5 Scanning Type

Support three line in(parallel ) for CCD, one line in for CIS two types.

A. CCD

a. Three line in :

R
G
B

b. Line by line :

R G B

B. CIS

a. color scan :

TG

LED R

LED G

LED B