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Texas Instruments C28 Series Student Guide

Texas Instruments C28 Series
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General-Purpose Digital I/O
C28x GPIO Functional Block Diagram
C28x GPIO Functional Block Diagram
1
1
0
0
MUX Control Bit
MUX Control Bit
0 = I/O Function
0 = I/O Function
1 = Primary Function
1 = Primary Function
Pin
Pin
Primary
Primary
Peripheral
Peripheral
Function
Function
I/O DAT
I/O DAT
Bit (R/W)
Bit (R/W)
In
In
Out
Out
I/O DIR Bit
I/O DIR Bit
0 = Input
0 = Input
1 = Output
1 = Output
GPxMUX
GPxMUX
GPxDIR
GPxDIR
GPxDAT
GPxDAT
GPxSET
GPxSET
GPxCLEAR
GPxCLEAR
GPxTOGGLE
GPxTOGGLE
QUALPRD
reserved
7
7
-
-
0
0
15
15
-
-
8
8
GPxQUAL
GPxQUAL
00h
00h
no qualification
no qualification
(SYNC to SYSCLKOUT)
(SYNC to SYSCLKOUT)
01h
01h
QUALPRD = SYSCLKOUT/2
QUALPRD = SYSCLKOUT/2
02h
02h
QUALPRD = SYSCLKOUT/4
QUALPRD = SYSCLKOUT/4
FFh
FFh
QUALPRD = SYSCLKOUT/510
QUALPRD = SYSCLKOUT/510
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Some digital I/O and
Some digital I/O and
peripheral I/O input
peripheral I/O input
signals include an
signals include an
Input Qualification
Input Qualification
feature
feature
C28x GPIO MUX/DIR Registers
C28x GPIO MUX/DIR Registers
(lab file: GPIO.c)
(lab file: GPIO.c)
Address
Address
Register
Register
Name
Name
0x0070C0
0x0070C0
GPAMUX
GPAMUX
GPIO A Mux Control Register
GPIO A Mux Control Register
0x0070C1
0x0070C1
GPADIR
GPADIR
GPIO A Direction Control Register
GPIO A Direction Control Register
0x0070C2
0x0070C2
GPAQUAL
GPAQUAL
GPIO A Input Qualification Control Register
GPIO A Input Qualification Control Register
0x0070C4
0x0070C4
GPBMUX
GPBMUX
GPIO B
GPIO B
Mux
Mux
Control Register
Control Register
0x0070C5
0x0070C5
GPBDIR
GPBDIR
GPIO B Direction Control Register
GPIO B Direction Control Register
0x0070C6
0x0070C6
GPBQUAL
GPBQUAL
GPIO B Input Qualification Control Register
GPIO B Input Qualification Control Register
0x0070CC
0x0070CC
GPDMUX
GPDMUX
GPIO D
GPIO D
Mux
Mux
Control Register
Control Register
0x0070CD
0x0070CD
GPDDIR
GPDDIR
GPIO D Direction Control Register
GPIO D Direction Control Register
0x0070CE
0x0070CE
GPDQUAL
GPDQUAL
GPIO D Input Qualification Control Register
GPIO D Input Qualification Control Register
0x0070D0
0x0070D0
GPEMUX
GPEMUX
GPIO E
GPIO E
Mux
Mux
Control Register
Control Register
0x0070D1
0x0070D1
GPEDIR
GPEDIR
GPIO E Direction Control Register
GPIO E Direction Control Register
0x0070D2
0x0070D2
GPEQUAL
GPEQUAL
GPIO E Input Qualification Control Register
GPIO E Input Qualification Control Register
0x0070D4
0x0070D4
GPFMUX
GPFMUX
GPIO F
GPIO F
Mux
Mux
Control Register
Control Register
0x0070D5
0x0070D5
GPFDIR
GPFDIR
GPIO F Direction Control Register
GPIO F Direction Control Register
0x0070D8
0x0070D8
GPGMUX
GPGMUX
GPIO G
GPIO G
Mux
Mux
Control Register
Control Register
0x0070D9
0x0070D9
GPGDIR
GPGDIR
GPIO G Direction Control Register
GPIO G Direction Control Register
5 - 12 C28x - System Initialization

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Texas Instruments C28 Series Specifications

General IconGeneral
BrandTexas Instruments
ModelC28 Series
CategoryComputer Hardware
LanguageEnglish

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