Analog Devices ADSP-219 Series Hardware Reference Manual page 24

ADSP-2192 Peripheral Device Control Registers
General Purpose I/O (GPIO) Control Registers
Eight pins support general-purpose I/O to registers that control them.
Table B-7 lists the Peripheral Device Control Register Space for GPIO
Control registers:
Table B-7. GPIO Control Registers
Register Description
Name
GPIOCFG GPIO Configuration
Direction Control (1 =
input, 0 = output)
GPIOPOL GPIO Polarity
Inputs:
0 = active high
1 = active low.
Outputs:
0 = CMOS
1 = Open Drain
GPIOSTKY GPIO Sticky:
1 = sticky, 0 = not sticky
GPIOWCTL GPIO Wake Control
1 = wake-up enabled
(requires sticky set)
GPIOSTAT GPIO Status
Read = Pin state
Write: 0 = clear sticky
status, 1 = no effect
GPIOCTL GPIO Control (w), Init (r)
Read = Power-on state;
Write: Set state of out-
put pins
B-24 ADSP-219x/2192 DSP Hardware Reference
PCI USB
Address Address
0x010 0x0010
0x012 0x0012
0x014 0x0014
0x016 0x0016
0x018 0x0018
0x01A 0x001A
DSP DSP
I/O I/O
Page Address
0x00 0x10
0x12
0x00 0x14
0x00 0x16
0x00 0x18
0x00 0x1A