Intermec 073300-001 用户手册

Chapter 4 — Theory of Operation

Using the Scanner Interface Signal Set - Part 1 (continued)

Signal Name

Source/
Destination

2D Imager usage

DBP scanner
usage

Tethered undecoded
scanner usage

(10-pin

only)

IMAGER_PIXCLK FPGA

IO Pixel clock from

scanner

Data valid on rising
edge

Beep/Scanner

present

0 = no scanner installed
1 = scanner installed

TRIG_AIM*

HCR out

Enable aiming LED

0 = disable
1 = enable

EV10 1D/2D select.
0 = 2D
1 = 1D

SE900 aim beam

Auto-Detect Enable

0 = enable
1 = disable

SCAN_TRIG* FPGA_IO

Modulate
illumination LEDs

Not used on
IT4000

SE900 config bit 2

Trigger from scanner

Active-low

IMAGER_SD0-7

FPGA in

8-bit Imager pixel
data

I2C_CLK, I2C_DAT

PXA250 IO

I2C imager control

Using the Scanner Interface Signal Set – Part 2

Signal Name

Source/
Destination

SPI Scanner
Usage

EL10 Usage

Tethered
Decoded Scanner
Usage (

10-pin only

)

Decoded
Scanner (

E1025

)

Usage

SCAN_PWR_EN* U11

out Enable scanner

power

0 = enable
1 = disable

Enable scanner
power

0 = enable
1 = disable

Enable scanner
power

0 = enable
1 = disable

Enable scanner
power

0 = enable
1 = disable

ILLUM_LASEN_RT
S

FPGA_IO

Laser enable

0 = enable
1 = disable

Laser enable

0 = enable
1 = disable

RTS to scanner
Active-low

SCAN_FLASH_EN*

U11 out

Scan enable

0 = enable
1 = disable

Scan enable

0 = enable
1 = disable

Scanner reflash
enable
Active-high

SOS

FPGA in

SOS (Start of
Scan) toggles at
start of each
scan

CTS from scanner
Active-low

CTS from
scanner
Active-low

DBP (Video)

FPGA in

SPI data from
scanner

DBP (Video)

0 = black
1 = idle, white

RxD from scanner

0 = 0 or space state
1 = 1 or marking
state

RxD from
scanner
0 = 0 or space
state
1 = 1 or marking
state

CK30 Handheld Computer Service Manual