User`s guide

4-14 Intel
®
StrongARM
®
SA-1110 Microprocessor Development Board User’s Guide
Hardware Considerations
4.4.3 SA-1110 Development Board Status Register 0x1200,0000
The SA-1110 Development Board requires additional GPIO input functions which are
implemented in the SA-1110 Development Board Status Register (BSR) for communications and
radio functions. The BSR is read only.
22 Rad_On
Radio Power On
0 – Radio power off
1 – Radio power on
Must be programmed to 0 when system goes to sleep.
This device uses significant power and should be used sparingly to conserve battery
usage. During transmission the radio may consume 10 times more power then the rest of
the system.
23 Spk_Off
Speaker Off
0 – Speaker amplifier power on
1 – Speaker amplifier power off
Must be programmed to 1 when system goes to sleep
This device may use significant power and should be used sparingly to conserve battery
usage.
31:24 Reserved —
Table 4-6. Board Control Register (Sheet 4 of 4)
0x1200,0000 Board Control Register SA-1110 Evaluation Module
Bit
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9 8 7 6 5 4 3 2 1 0
Reserved
Spk_Off Rad_On
Qmute
TV_IR_Dec_En
SMB_En
Rad_WU
COM_RTS
COM_DTR
Vib_On
D8_LED D9_LED
RS232En
LCD On
LCD12or16
Light
Audio_On
CF_Bus_On
Stereo_LB
IRDA_MD[1:0]
IRDA_FSEL
SOFT_RST
CF_RST GFX_RST
CF_PWR NEP_RST
Reset X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
Bits Name Description