
130
DesignWare ARC AXC003 CPU Card User Guide
GPIO Registers
Synopsys, Inc.
Version 6323-018
May 2017
19:16
R
0xD*
Reserved
20
MB_SW2504
R/W
0x0
CPU Start
button SW2504 on the ARC SDP
Mainboard pressed
0x1*
CPU Start
button SW2504 on the ARC SDP
Mainboard not pressed
21
MB_SW2506
R/W
0x0
CPU Start
button SW2506 on the ARC SDP
Mainboard pressed
0x1*
CPU Start
button SW2506 on the ARC SDP
Mainboard not pressed
22
MB_SW2505
R
0x0
CPU Start
button SW2505 on the ARC SDP
Mainboard pressed
0x1*
CPU Start
button SW2505 on the ARC SDP
Mainboard not pressed
23
MB_SW2507
R
0x0
CPU Start
button SW2507 on the ARC SDP
Mainboard pressed
0x1*
CPU Start
button SW2507 on the ARC SDP
Mainboard not pressed
31:24
R
0x0*
Reserved
GPIO_EXT_PORTB: GPIO Port B Input Register
Address offset:
0x3054
Reset value:
depends on jumper settings on the AXC003 CPU Card
Table 44
GPIO Port B Input Register (GPIO_EXT_PORTB)
Legend: * reset value
Bit
Name
Access
Value
Description
0
Reserved
R
0 *
1
JP1201
R
0
Default setting
1]
1
Reserved
2
JP1202
R
0
Default setting
1]
1
Reserved
3
JP1203
R
0
Default setting
1]
1
Reserved
4
JP1204
R
0
Default setting
1]
1
Reserved
5
JP1205
R
0
Default setting
1]
1
Reserved
6
JP1206
R
0
Default setting
1]