GL842 datasheet(12/64 Pages) GENESYS

12 / 64 page

GL842 USB 2.0 2-in-1 Scanner Controller

Page 12

Miscellaneous

Pin Name

Pin#

Type

ASIC I/O

Cell

Description

TSTSEL[1:0]

116,115

(pd)

hbd16dhk To select mode: Normal mode=0

MTR_SEL[1:0]

28,27

(pd)

hbd16dhk

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

Clock input for crystal (12MHz)

I/O

Clock output for crystal

EXTRST_

117

Hbd8rteu Hardware reset input

USB Interface

Pin Name

Pin#

Type

ASIC I/O

Cell

Description

NC or DGND

118

NC or USB shield ground

RPU

121

3.3V Pull up control for DPF

DPF

123

I/O

Positive USB differential data (Full Speed)

DPH

124

I/O

Positive USB differential data (High Speed)

DMF

125

I/O

Negative USB Differential Data (Full Speed)

DMH

126

I/O

Negative USB Differential Data (High Speed)

RREF

128

510 Ω reference resistor input

Power / Ground

Pin Name

Pin#

Type

ASIC I/O

Cell

Description

AVDD, AVCC1

122,1

Analog power input for USB2.0 transceiver 3.3V

AGND, AGND1

127,4

Analog ground input for USB2.0 transceiver

DVCC0, DVCC1

119,5

Digital power input for USB2.0 controller 3.3V

DGND0, DGND1

120,6

Digital ground input for USB2.0 controller.

VccCore1~4

21,52,82,

113

Digital power input for scanner controller logic core 3.3V

GndCore1~4,

Gndio1~6

22,53,83,

114,26,49,

64,75,91,

104

Digital ground input for scanner controller.

Vccio1

For Pin7~Pin39 3.3V or 5V

Vccio2

For Pin40~Pin58 3.3V or 5V

Vccio3

For Pin59~Pin66 3.3V or 5V

Vccio4~6

74,90,103

For Pin67~116 3.3V or 5V

Note: hbd16* is for 6mA; hbd8* is for 8mA.

GL842 Datasheet(PDF) 12 Page - GENESYS LOGIC

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