GPxDAT (read)
Input
Qualification
GPxMUX1/2
High Impedance
Output Control
GPIOx pin
XRS
0 = Input, 1 = Output
Low P ower
Modes Block
GPxDIR (latch)
Peripheral 2 Input
Peripheral 3 Input
Peripheral 1 Output
Peripheral 2 Output
Peripheral 3 Output
Peripheral 1 Output Enable
Peripheral 2 Output Enable
Peripheral 3 Output Enable
00
01
10
11
00
01
10
11
00
01
10
11
GPxCTRL
Peripheral 1 Input
N/C
GPxPUD
LPMCR0
Internal
Pullup
GPIOLMPSEL
GPxQSEL1/2
GPxSET
GPxDAT (latch)
GPxCLEAR
GPxTOGGLE
= Default at Reset
PIE
External Interrupt
MUX
Asynchronous
path
Asynchronous path
GPIOXINT1SEL
GPIOXINT2SEL
GPIOXINT3SEL
147
TMS320F28069, TMS320F28068, TMS320F28067, TMS320F28066
TMS320F28065, TMS320F28064, TMS320F28063, TMS320F28062
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SPRS698F – NOVEMBER 2010 – REVISED MARCH 2016
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Detailed Description
Copyright © 2010–2016, Texas Instruments Incorporated
A.
x stands for the port, either A or B. For example, GPxDIR refers to either the GPADIR and GPBDIR register
depending on the particular GPIO pin selected.
B.
GPxDAT latch/read are accessed at the same memory location.
C.
This is a generic GPIO MUX block diagram. Not all options may be applicable for all GPIO pins. See the Systems
Control and Interrupts chapter of the
TMS320x2806x Piccolo Technical Reference Manual
(
SPRUH18
) for pin-specific
variations.
Figure 6-55. GPIO Multiplexing