Analog Devices ADSP-219 Series, Hardware Reference Manual

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