Read Sharp UP-X200 (serv.man9) Service Manual online
UP-X200
Outline of Hardware
– 3 –
Flash memory map
Boot Flash
<Boot Loader-2 Area>
Boot loader image and SUM information that serves to determine
whether or not the boot loader image has been successfully written are
written in the boot loader-2 area.
whether or not the boot loader image has been successfully written are
written in the boot loader-2 area.
<Parameter Area>
The COMADJ/RTC accurancy adjustment value should be stored in the parameter area.
DiskOnChip
1-3. KEY MATRIX
The key matrix is interfaced by the GPIO instruction set of the CPU. The
key matrix comprised of 24 keys connected in a 6 column 4 row
arrangement.
The [Power] key is connected to GPIO_0 and GPIO_22 of the PXA255
processor.
If more than three keys are pressed simultaneously, the correct result of
key input cannot be acquired because two or more of the keys pressed
are in the same column (COL).
(An example of incorrect input: pressing the [8], [9] and the [4] keys
simultaneously)
In the UP-X200, the [•] and [TRG] are separated into a different group
from the other keys. Therefore, when the [•] and [TRG] keys are
pressed together in conjunction with another key in the same column,
the key combination is interpreted as specified.
(An example of correct input: pressing keys the [8], [9] and the [•] simul-
taneously)
key matrix comprised of 24 keys connected in a 6 column 4 row
arrangement.
The [Power] key is connected to GPIO_0 and GPIO_22 of the PXA255
processor.
If more than three keys are pressed simultaneously, the correct result of
key input cannot be acquired because two or more of the keys pressed
are in the same column (COL).
(An example of incorrect input: pressing the [8], [9] and the [4] keys
simultaneously)
In the UP-X200, the [•] and [TRG] are separated into a different group
from the other keys. Therefore, when the [•] and [TRG] keys are
pressed together in conjunction with another key in the same column,
the key combination is interpreted as specified.
(An example of correct input: pressing keys the [8], [9] and the [•] simul-
taneously)
• Power
• Reset
GPIO_0 or GPIO_1 is the only element which causes the ON condition
after a full PXA255 reset. The [Power] key and AC adapter input are
ORed and set in GPIO_0. The determination of whether power-on is
effected by AC insertion or the [Power] key is made as follows: power is
switched on by the [Power] key when GPIO_22 is high and by AC inser-
tion when low.
after a full PXA255 reset. The [Power] key and AC adapter input are
ORed and set in GPIO_0. The determination of whether power-on is
effected by AC insertion or the [Power] key is made as follows: power is
switched on by the [Power] key when GPIO_22 is high and by AC inser-
tion when low.
Key Matrix
Boot Loader-1
320KB
Normal version boot loader
Boot Loader-2
320KB
Replacement boot loader
Diag (for production use)
320KB
Diag for production use
Parameter area
64KB
Parameter area
SUM information
Boot loader image
0x000f0000
: "CMAJ"(Keyword: if not written, the next 4 bits will be invalid.)
0x000f0004
: COMADJ set value
0x000f0008
: "RTCV"(Keyword: if not written, the next 4 bits will be invalid.)
0x000f000c
: RTC accurancy adjustment value
WindowsCE image 28MB
WindowsCE image or Diagnostics
Registry area
1MB
Registry area
File system
Approx.
35MB
35MB
Flash Disk:TrueFFS manufactured by M-Systems
GPIO [0]
Power key
GPIO [1]
GPIO Reset
NET
COL0
COL1
COL2
COL3
COL4
COL5
COL6
PIN
GPIO
[58]
GPIO
[59]
GPIO
[60]
GPIO
[61]
GPIO
[62]
GPIO
[63]
GPIO
[66]
ROW0
GPIO [69]
1
2
8
9
TRG1
ROW1
GPIO [70]
3
7
5
6
TRG2
ROW2
GPIO [71]
4
4
2
3
ROW3
GPIO [72]
CL
•
1
0
Enter
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