1D Dbp Scanner Interface - Intermec CK30 Service Manual

Chapter 4 — Theory of Operation
Using the Scanner Interface Signal Set – Part 2 (continued)
Source/
Signal Name Destination
SPEED/RANGE/ FPGA out
GDRD
IMAGER_PIXCLK FPGA IO
TRIG_AIM* HCR out
SCAN_TRIG* FPGA_IO
IMAGER_SD0-7 FPGA in
I2C_CLK, I2C_DAT PXA250 IO

1D DBP Scanner Interface

78
SPI Scanner
Usage
Speed select
0 = 200 scans/
sec (EV10)
0 = 500 scans/
sec (EL10)
1 = 36 scans/
sec (EV10)
1 = 65 scans/
sec (EL10)
SPI clock to
scanner (and
scanner mode
select)
1D/2D select
0 = 2D
1 = 1D
SPI data to
scanner (and
scanner mode
select)
Internal scanners and undecoded tethered scanners using the legacy "DBP"
laser scanner interface are handled through count gathering logic in the
FPGA. See the next table for scanners using this interface scheme.
Tethered
Decoded Scanner
EL10 Usage Usage (
Speed select TxD to scanner
0 = 500 scans/ 0 = 0 or space state
sec 1 = 1 or marking
1 = 65 scans state
/sec
Scanner present
0 = no scanner
installed
1 = scanner installed
Scanner reset Auto-Detect Enable
Active-low 0 = enable
1 = disable
Trigger from
scanner
Active-low
I2C scanner
control
CK30 Handheld Computer Service Manual
Decoded
Scanner (
E1025
) Usage
10-pin only
TxD to scanner
0 = 0 or space
state
1 = 1 or marking
state
Trigger to scanner
Active-low
)