Intermec CK30

Chapter 4 — Theory of Operation
Using the Scanner Interface Signal Set – Part 2 (continued)
Signal Name
Source/
Destination
SPI Scanner
Usage EL10 Usage
Tethered
Decoded Scanner
Usage ( 10-pin only )
Decoded
Scanner ( E1025 )
Usage
SPEED/RANGE/
GDRD
FPGA out Speed select
0 = 200 scans/
sec (EV10)
0 = 500 scans/
sec (EL10)
1 = 36 scans/
sec (EV10)
1 = 65 scans/
sec (EL10)
Speed select
0 = 500 scans/
sec
1 = 65 scans
/sec
TxD to scanner
0 = 0 or space state
1 = 1 or marking
state
TxD to scanner
0 = 0 or space
state
1 = 1 or marking
state
IMAGER_PIXCLK FPGA IO
SPI clock to
scanner (and
scanner mode
select)
Scanner present
0 = no scanner
installed
1 = scanner installed
TRIG_AIM* HCR out 1D/2D select
0 = 2D
1 = 1D
Scanner reset
Active-low
Auto-Detect Enable
0 = enable
1 = disable
Trigger to scanner
Active-low
SCAN_TRIG* FPGA_IO
SPI data to
scanner (and
scanner mode
select)
Trigger from
scanner
Active-low
IMAGER_SD0-7 FPGA in
I2C_CLK, I2C_DAT PXA250 IO
I2C scanner
control
1D DBP Scanner Interface
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.
78 CK30 Handheld Computer Service Manual