MIC2555_06 Datasheet, PDF (26/29 Pages) Micrel Semiconductor – USB – OTG Transceiver

Micrel, Inc.
GPIO Output Enable
Set & Clear
GPIO_0
1
GPIO_1
1
GPIO_2
1
1
1
1
1
1
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
set –14h
clr – 15h
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
1 Æset = 1, GPIO = OUTPUT.
1 Æclr = 0, GPIO = INPUT.
MIC2555
GPIO Output
Set & Clear
GPIO_0
GPIO_1
GPIO_2
set –16h
clr – 17h
1 Æset = 1 at GPIO OUTPUT.
1 Æclr = 0 at GPIO OUTPUT.
1
rd/s/c
bit 0
1
rd/s/c
bit 1
1
rd/s/c
bit 2
1
rd/s/c
bit 3
1
rd/s/c
bit 4
1
rd/s/c
bit 5
1
rd/s/c
bit 6
1
rd/s/c
bit 7
GPIO Input
Read Status
GPIO_0
GPIO_1
GPIO_2
rd – 18h Read current state of GPIO input
1
rd
bit 0
1
rd
bit 1
1
rd
bit 2
1
rd
bit 3
1
rd
bit 4
1
rd
bit 5
1
rd
bit 6
1
rd
bit 7
GPIO Interrupt Latch
Interrupt Source
GPIO_0
1
GPIO_1
1
GPIO_2
1
1
1
1
1
1
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
rd/s/c
set –1Ah
clr – 1Bh
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
Indicates which sources have interrupted.
1 = interrupt.
December 2006
26
M9999-121406