Intermec 073292-001 用户手册
Chapter 4 — Theory of Operation
HCR Output Signal Descriptions (continued)
HCR
Bit
Function
Signal Description
Usage
U16
20
CF_RESET
Compact Flash slot 0 Reset (unused in CK30).
0 = idle
1 = reset
1 = reset
U16
21
USB_EN
Enables pull-up on USB bus to acknowledge host and start
communications. This can be used to hold off USB
communications until the USB driver is ready, or to disconnect a
USB session in progress (simulated cable disconnect).
communications. This can be used to hold off USB
communications until the USB driver is ready, or to disconnect a
USB session in progress (simulated cable disconnect).
0 = USB
disconnect
1 = USB connect
disconnect
1 = USB connect
U16
22
LCD VEE_EN
LCD bias supply enable.
0 = off
1 = on
1 = on
U16
23
BKLT_ON
Backlight On/Off control.
0 = off
1 = on
1 = on
U11
0
BKLT_LOW
Backlight level.
0 = high
1 = low
1 = low
U11
1
DOCK_EN
Enables RS-232 communications through the 26-pin dock port.
Also used to switch tethered scanner power to dock connector.
Also used to switch tethered scanner power to dock connector.
This should be turned off on Suspend unless the computer has
been configured to support trigger-resume on a tethered scanner
plugged into the dock port.
been configured to support trigger-resume on a tethered scanner
plugged into the dock port.
0 = disable dock
serial and tethered
power
serial and tethered
power
1 = enable dock
serial and tethered
power
serial and tethered
power
U11
2
DISPLAY_EN
High enables LCD module logic.
0 = LCD logic off
1 = LCD logic on
1 = LCD logic on
2D imager usage: aiming LED control.
1 = Aim
S9C decoder usage: Trigger signal.
0 = Trigger
EV10 usage: 1D/2D select.
0 = 1D and 2D
1 = 1D
1 = 1D
SE900 usage: spotter beam.
0 = Aim
SE900HS usage: 1D/2D.
0 = 2D
1 = 1D
1 = 1D
Tethered scanner usage: Auto-detect enable/disable.
0 = enable auto-
detect
detect
U11
3
TRIG_AIM*
E2010 usage: Reset.
0 = reset
U11
4
SCAN_PWR_EN*
Scanner power control.
This should be turned off on Suspend unless the computer has
been configured to support trigger-resume on a tethered scanner
plugged into the 10-pin port.
been configured to support trigger-resume on a tethered scanner
plugged into the 10-pin port.
0 = scanner power
on
on
1 = scanner power
off
off
U11
5
SCAN_12C_EN*
U34 gate control to isolate the 2D imager from the I2C bus
when it is powered down.
when it is powered down.
0 = imager
isolated from
I2C bus
I2C bus
1 = imager
connected to
I2C bus
I2C bus
U11
6
LASEN
Originally defined as a scanner control signal, this HCR output
is now unused. Its function was moved to the FPGA.
is now unused. Its function was moved to the FPGA.
N/A
U11
7
-FPGA_RESET
Reset the FPGA logic and FIFOs.
0 = reset
1 = idle
1 = idle
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CK30 Handheld Computer Service Manual