参数资料
型号: TMX20F2810PBKAEP
厂商: Texas Instruments, Inc.
元件分类: 数字信号处理
英文描述: Digital Signal Processors
中文描述: 数字信号处理器
文件页数: 81/159页
文件大小: 2084K
代理商: TMX20F2810PBKAEP
Peripherals
81
March 2004 Revised October 2004
SGUS051A
4.8
GPIO MUX
The GPIO Mux registers, are used to select the operation of shared pins on the F281x and C281x devices.
The pins can be individually selected to operate as “Digital I/O” or connected to “Peripheral I/O” signals (via
the GPxMUX registers). If selected for “Digital I/O” mode, registers are provided to configure the pin direction
(via the GPxDIR registers) and to qualify the input signal to remove unwanted noise (via the GPxQUAL)
registers). Table 411 lists the GPIO Mux Registers.
Table 411. GPIO Mux Registers
§
NAME
ADDRESS
SIZE (x16)
REGISTER DESCRIPTION
GPAMUX
0x00 70C0
1
GPIO A Mux Control Register
GPADIR
0x00 70C1
1
GPIO A Direction Control Register
GPAQUAL
0x00 70C2
1
GPIO A Input Qualification Control Register
reserved
0x00 70C3
1
GPBMUX
0x00 70C4
1
GPIO B Mux Control Register
GPBDIR
0x00 70C5
1
GPIO B Direction Control Register
GPBQUAL
0x00 70C6
1
GPIO B Input Qualification Control Register
reserved
0x00 70C7
1
reserved
0x00 70C8
1
reserved
0x00 70C9
1
reserved
0x00 70CA
1
reserved
0x00 70CB
1
GPDMUX
0x00 70CC
1
GPIO D Mux Control Register
GPDDIR
0x00 70CD
1
GPIO D Direction Control Register
GPDQUAL
0x00 70CE
1
GPIO D Input Qualification Control Register
reserved
0x00 70CF
1
GPEMUX
0x00 70D0
1
GPIO E Mux Control Register
GPEDIR
0x00 70D1
1
GPIO E Direction Control Register
GPEQUAL
0x00 70D2
1
GPIO E Input Qualification Control Register
reserved
0x00 70D3
1
GPFMUX
0x00 70D4
1
GPIO F Mux Control Register
GPFDIR
0x00 70D5
1
GPIO F Direction Control Register
reserved
0x00 70D6
1
reserved
0x00 70D7
1
GPGMUX
0x00 70D8
1
GPIO G Mux Control Register
GPGDIR
0x00 70D9
1
GPIO G Direction Control Register
reserved
0x00 70DA
1
reserved
0x00 70DB
1
reserved
0x00 70DC
0x00 70DF
4
Reserved locations will return undefined values and writes will be ignored.
Not all inputs will support input signal qualification.
§These registers are EALLOW protected. This prevents spurious writes from overwriting the contents and corrupting the system.
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