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Hardware Description
Copyright © ARM Limited 2000. All rights reserved.
3-21
3.5.1
Software controlled LEDs
The software controllable LEDs provided on the CPU card are controlled by the system
controller PLD or the keyboard controller. Table 3-7 lists these LEDs and indicates by
which device they are controlled.
Note
* These LEDs are replicated on the distribution panel and visible through apertures in
the keyboard housing (applies to system units only).
3.5.2
Software readable switches
The switches included on the P1100 CPU board are:
•
a dual-in-line switch pack containing five individual switches
•
hexadecimal rotary switch providing a 4-bit value
Three switches within the DIL pack and the rotary switch are connected to the GPIO
pins on the keyboard controller. These switches can be assigned any meaning by the
software developer.
Table 3-7 LEDs connection and control
LED
Name
Color
Driving device
Driving signal
D1
CPU_LED*
Green
SA-1100
CPU_GPIO25
D2
PLD_LED0
Red
System controller PLD
not named
D3
PLD_LED1
Red
System controller PLD
not named
D4
PLD_LED2
Yellow
System controller PLD
not named
D5
PLD_LED3
Green
System controller PLD
not named
D6
KBD_LED0*
Red
Keyboard controller
KBD_LED0
D6
KBD_LED1*
Yellow
Keyboard controller
KBD_LED1
D8
KBD_LED2*
Green
Keyboard controller
KBD_LED2
D9
KBD_LED3*
Green
Keyboard controller
KBD_LED3
D10
FPGA_LED
Green
FPGA – signals when the FPGA has
completed its programming on power up.
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Содержание Prospector P1100
Страница 1: ...ARM DUI 0122A Prospector P1100 User Guide ...
Страница 4: ...iv Copyright ARM Limited 2000 All rights reserved ARM DUI 0122A ...
Страница 86: ...Hardware Description 3 54 Copyright ARM Limited 2000 All rights reserved ARM DUI 0122A ...
Страница 140: ...Connector reference A 18 Copyright ARM Limited 2000 All rights reserved ARM DUI 0122A ...