ADS1247寄存器中文翻译
ADS1247与ADS1248的寄存器列表
| ADDRESS |
REGISTER |
BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| 00h |
MUX0 |
BCS1 |
BCS0 |
MUX_SP2 |
MUX_SP1 |
MUX_SP0 |
MUX_SN2 |
MUX_SN1 |
MUX_SN0 |
| 01h |
VBIAS |
VBIAS7 |
VBIAS6 |
VBIAS5 |
VBIAS4 |
VBIAS3 |
VBIAS2 |
VBIAS1 |
VBIAS0 |
| 02h |
MUX1 |
CLKSTAT |
VREFCON1 |
VREFCON0 |
REFSELT1 |
REFSELT0 |
MUXCAL2 |
MUXCAL1 |
MUXCAL0 |
| 03h |
SYS0 |
0 |
PGA2 |
PGA1 |
PGA0 |
DR3 |
DR2 |
DR1 |
DR0 |
| 04h |
OFC0 |
OFC7 |
OFC6 |
OFC5 |
OFC4 |
OFC3 |
OFC2 |
OFC1 |
OFC0 |
| 05h |
OFC1 |
OFC15 |
OFC14 |
OFC13 |
OFC12 |
OFC11 |
OFC10 |
OFC9 |
OFC8 |
| 06h |
OFC2 |
OFC23 |
OFC22 |
OFC21 |
OFC20 |
OFC19 |
OFC18 |
OFC17 |
OFC16 |
| 07h |
FSC0 |
FSC7 |
FSC6 |
FSC5 |
FSC4 |
FSC3 |
FSC2 |
FSC1 |
FSC0 |
| 08h |
FSC1 |
FSC15 |
FSC14 |
FSC13 |
FSC12 |
FSC11 |
FSC10 |
FSC9 |
FSC8 |
| 09h |
FSC2 |
FSC23 |
FSC22 |
FSC21 |
FSC20 |
FSC19 |
FSC18 |
FSC17 |
FSC16 |
|
0Ah |
IDAC0 |
ID3 |
ID2 |
ID1 |
ID0 |
DRDY MODE |
IMAG2 |
IMAG1 |
IMAG0 |
| 0Bh |
IDAC1 |
I1DIR3 |
I1DIR2 |
I1DIR1 |
I1DIR0 |
I2DIR3 |
I2DIR2 |
I2DIR1 |
I2DIR0 |
| 0Ch |
GPIOCFG |
IOCFG7 |
IOCFG6 |
IOCFG5 |
IOCFG4 |
IOCFG3 |
IOCFG2 |
IOCFG1 |
IOCFG0 |
| 0Dh |
GPIODIR |
IODIR7 |
IODIR6 |
IODIR5 |
IODIR4 |
IODIR3 |
IODIR2 |
IODIR1 |
IODIR0 |
| 0Eh |
GPIODAT |
IODAT7 |
IODAT6 |
IODAT5 |
IODAT4 |
IODAT3 |
IODAT2 |
IODAT1 |
IODAT0 |
ADS1247 and ADS1248 寄存器定义
MUX0多路控制开关0。此寄存器可以任意组合的差分输入选择的任何输入通道。请注意，此设置可以通过muxcal和VBIAS位取代。
| MUX0 地址00H RESET VALUE = 01h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| BCS1 |
BCS0 |
MUX_SP2 |
MUX_SP1 |
MUX_SP0 |
MUX_SN2 |
MUX_SN1 |
MUX_SN0 |
Bits 7:6 BCS1:0 电流源电流大小设置
00 =关闭电流源（默认）
01 = 0.5uA
10 = 2uA
11 = 10uA
Bits 5:3 MUX_SP2:0 正输入通道选择
000 = AIN0 (default)
001 = AIN1
010 = AIN2
011 = AIN3
100 = AIN4 (ADS1248only)
101 = AIN5 (ADS1248only)
110 = AIN6 (ADS1248only)
111 = AIN7 (ADS1248only)
Bits 2:0 MUX_SN2:0 负输入通道选择
000 = AIN0
001 = AIN1 (default)
010 = AIN2
011 = AIN3
100 = AIN4 (ADS1248only)
101 = AIN5 (ADS1248only)
110 = AIN6 (ADS1248only)
111 = AIN7 (ADS1248only)
VBIAS—偏执电压设置寄存器
| VBIAS – 地址 01h RESET VALUE = 00h |
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| DEVICE |
BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| ADS1248 |
VBIAS7 |
VBIAS6 |
VBIAS5 |
VBIAS4 |
VBIAS3 |
VBIAS2 |
VBIAS1 |
VBIAS0 |
| ADS1247 |
0 |
0 |
0 |
0 |
VBIAS3 |
VBIAS2 |
VBIAS1 |
VBIAS0 |
Bits 7:0 VBIAS7:0 设置偏压(AVDD + AVSS)/2到选择的模拟输入
0 = 关闭偏执电压 (default)
1 = 开启偏执电压到对应的输入 (bit 0 对应到AIN0,依次类推.).
MUX1—多路开关控制器1
| MUX1 - ADDRESS 02h RESET VALUE = 00h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| CLKSTAT |
VREFCON1 |
VREFCON0 |
REFSELT1 |
REFSELT0 |
MUXCAL2 |
MUXCAL1 |
MUXCAL0 |
Bit 7 CLKSTAT 此位为只读，并表示内部或外部振荡器是否正在使用。
0 = 内部时钟正在使用
1 = 外部时钟正在使用
Bits 6:5 VREFCON1:0 控制内部电压基准。这些位允许引用完全打开或关闭，或允许引用状态跟随设备的状态。注意内部参考为IDAC功能操作要求。
00 =关闭基准fault)
01 = 一直开启基准
10 or 11 =转换完成后或关机操作后关闭基准（跟随相关状态自动开启或关闭）
Bits 4:3 REFSELT1:0 ADC参考选择
00 =使用REF0作为基准输入(default)
01 =使用REF1作为基准输入(只支持ADS1248)
10 =选择内部基准
11 =在内部连接到参考选择REF0输入对（不知道干嘛的）
Bits 2:0 MUXCAL2:0这些位用于选择一个测量方式（选择的测量方式将取代MUX_SP, MUX_SN, and VBIAS）
000 =正常运行 (default)
001 =偏移测量
010 =增益测量
011 =内部温度测量
100 = 外部 REF1 测量(ADS1248 only)
101 = 外部REF0测量
110 = AVDD 测量
111 = DVDD 测量
MUXCAL 设置
| MUXCAL[2:0] |
PGA GAIN 设置 |
ADC INPUT |
| 000 |
通过SYS0设置 |
正常模式 |
| 001 |
通过SYS0设置 |
输入接到 (AVDD + AVSS)/2 |
| 010 |
强制设置为1 1 |
VREFP – VREFN (full-scale) |
| 011 |
强制设置为1 |
内部温度测量 |
| 100 |
强制设置为1 |
(VREFP1 – VREFN1)/4 |
| 101 |
强制设置为1 |
(VREFP0 – VREFN0)/4 |
| 110 |
强制设置为1 |
(AVDD – AVSS)/4 |
| 111 |
强制设置为1 |
(DVDD – DVSS)/4 |
设置会修改PGA，恢复正常模式后PGA由SYS0控制
SYS0—系统控制寄存器 0
| SYS0 - ADDRESS 03h RESET VALUE = 00h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| 0 |
PGA2 |
PGA1 |
PGA0 |
DOR3 |
DOR2 |
DOR1 |
DOR0 |
Bit 7 必须一直为 '0'
Bits 6:4 PGA2:0 PGA增益设置
000 = 1 (default)
001 = 2
010 = 4
011 = 8
100 = 16
101 = 32
110 = 64
111 = 128
Bits 3:0 DOR3:0 ADC采集速率设置 最大设置为1001，选择2000sps
0000 = 5SPS (default)
0001 = 10SPS
0010 = 20SPS
0011 = 40SPS
0100 = 80SPS
0101 = 160SPS
0110 = 320SPS
0111 = 640SPS
1000 = 1000SPS
1001 to 1111 = 2000SPS
OFC23:0 ADS1248偏移校准系数寄存器.
OFC0—偏移校正系数寄存器0
| OFC0 - ADDRESS 04h RESET VALUE = 000000h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| OFC7 |
OFC6 |
OFC5 |
OFC4 |
OFC3 |
OFC2 |
OFC1 |
OFC0 |
OFC1—偏移校正系数寄存器1
| OFC1 - ADDRESS 05h RESET VALUE = 000000h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| OFC15 |
OFC14 |
OFC13 |
OFC12 |
OFC11 |
OFC10 |
OFC9 |
OFC8 |
OFC2—偏移校正系数寄存器2
| OFC2 - ADDRESS 06h RESET VALUE = 000000h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| OFC23 |
OFC22 |
OFC21 |
OFC20 |
OFC19 |
OFC18 |
OFC17 |
OFC16 |
FSC23:0 满量程校准系数寄存器（复位后恢复出厂校准值）.
FSC0—满量程校准寄存器0
| FSC0 - ADDRESS 07h RESET VALUE IS PGA DEPENDENT (1) |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| FSC7 |
FSC6 |
FSC5 |
FSC4 |
FSC3 |
FSC2 |
FSC1 |
FSC0 |
FSC1—满量程校准寄存器1
| FSC1 - ADDRESS 08h RESET VALUE IS PGA DEPENDENT (1) |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| FSC15 |
FSC14 |
FSC13 |
FSC12 |
FSC11 |
FSC10 |
FSC9 |
FSC8 |
FSC2—满量程校准寄存器2
| FSC2 - ADDRESS 09h RESET VALUE IS PGA DEPENDENT (1) |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| FSC23 |
FSC22 |
FSC21 |
FSC20 |
FSC19 |
FSC18 |
FSC17 |
FSC16 |
IDAC0 可编程电流源控制寄存器 0
| IDAC0 - ADDRESS 0Ah RESET VALUE = x0h |
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| BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| ID3 |
ID2 |
ID1 |
ID0 |
DRDY MODE |
IMAG2 |
IMAG1 |
IMAG0 |
Bits 7:4 ID3:0
只读只读，工厂编程位，用于识别修改版本。
Bit 3 DRDY MODE 用于设置DOUT/DRDY输出数据准备就绪状态，低电平有效
0 = DOUT/DRDY仅作为数据输出(default)
1 = DOUT/DRDY引脚功能既作为数据输出和数据准备，低电平有效
Bits 2:0 IMAG2:0 ADS1247/8有两个可编程电流源DAC可用于传感器激励。这几位控制激励电流的大小。IDAC要求内部基准源必须开启.
000 = off (default)
001 = 50mA
010 = 100mA
011 = 250mA
100 = 500mA
101 = 750mA
110 = 1000mA
111 = 1500mA
IDAC1 可编程电流源控制寄存器1
| IDAC1 - ADDRESS 0Bh RESET VALUE = FFh |
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| DEVICE |
BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| ADS1248 |
I1DIR3 |
I1DIR2 |
I1DIR1 |
I1DIR0 |
I2DIR3 |
I2DIR2 |
I2DIR1 |
I2DIR0 |
| ADS1247 |
0 |
0 |
I1DIR1 |
I1DIR0 |
0 |
0 |
I2DIR1 |
I2DIR0 |
ADS1247/8有2路IDAC，可以连接到IEXC1，IEXC2或任意模拟输入。
Bits 7:4 I1DIR3:0 这些位选择第一电流源DAC输出引脚。
0000 = AIN0
0001 = AIN1
0010 = AIN2
0011 = AIN3
0100 = AIN4 (ADS1248only)
0101 = AIN5 (ADS1248only)
0110 = AIN6 (ADS1248only)
0111 = AIN7 (ADS1248only)
10x0 = IEXT1 (ADS1248only)
10x1 = IEXT2 (ADS1248only)
11xx = 关闭(default)
Bits 3:0 I2DIR3:0 这些位选择了第二电流源DAC的输出引脚
0000 = AIN0
0001 = AIN1
0010 = AIN2
0011 = AIN3
0100 = AIN4 (ADS1248only)
0101 = AIN5 (ADS1248only)
0110 = AIN6 (ADS1248only)
0111 = AIN7 (ADS1248only)
10x0 = IEXT1 (ADS1248only)
10x1 = IEXT2 (ADS1248only)
11xx = 关闭(default)
GPIOCFG—GPIO 配置寄存器，用于配置GPIO与模拟输入引脚复用功能
GPIO0 复用 REFP0
GPIO1 复用 REFN0
GPIO2 复用 AIN2
GPIO3 复用 AIN3
GPIO4复用 AIN4 (ADS1248)
GPIO5复用 AIN5 (ADS1248)
GPIO6复用 AIN6 (ADS1248)
GPIO7复用 AIN7 (ADS1248)
| GPIOCFG - ADDRESS 0Ch RESET VALUE = 00h |
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| DEVICE |
BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| ADS1248 |
IOCFG7 |
IOCFG6 |
IOCFG5 |
IOCFG4 |
IOCFG3 |
IOCFG2 |
IOCFG1 |
IOCFG0 |
| ADS1247 |
0 |
0 |
0 |
0 |
IOCFG3 |
IOCFG2 |
IOCFG1 |
IOCFG0 |
Bits 7:0 IOCFG7:0 GPIO与模拟输入复用设置，注意ADS1248支持所有GPIO，但是ADS1247只支持GPIO1-GPIO3，也就是BIT0-BIT3
0 = 该引脚用作模拟输入(default)
1 = 该引脚用作 GPIO pin
GPIODIR—GPIO方向寄存器
| GPIODIR - ADDRESS 0Dh RESET VALUE = 00h |
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| DEVICE |
BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| ADS1248 |
IODIR7 |
IODIR6 |
IODIR5 |
IODIR4 |
IODIR3 |
IODIR2 |
IODIR1 |
IODIR0 |
| ADS1247 |
0 |
0 |
0 |
0 |
IODIR3 |
IODIR2 |
IODIR1 |
IODIR0 |
Bits 7:0 IODIR7:0 用于控制GPIO方向，注意ADS1248支持所有GPIO，但是ADS1247只支持GPIO1-GPIO3，也就是BIT0-BIT3
0 = GPIO输出模式 (default)
1 = GPIO 输入模式
GPIODAT—GPIO数据寄存器
| GPIODAT - ADDRESS 0Eh RESET VALUE = 00h |
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| DEVICE |
BIT 7 |
BIT 6 |
BIT 5 |
BIT 4 |
BIT 3 |
BIT 2 |
BIT 1 |
BIT 0 |
| ADS1248 |
IODAT7 |
IODAT6 |
IODAT5 |
IODAT4 |
IODAT3 |
IODAT2 |
IODAT1 |
IODAT0 |
| ADS1247 |
0 |
0 |
0 |
0 |
IODAT3 |
IODAT2 |
IODAT1 |
IODAT0 |
Bits 7:0 IODAT7:0 如果对应GPIO设置为输出，则写入对应bit会输出到相应引脚，如果对应GPIO设置为输入，则读取对应bit对应输入值，注意ADS1248支持所有GPIO，但是ADS1247只支持GPIO1-GPIO3，也就是BIT0-BIT3
SPI 命令
一些指令是独立的命令（例如，复位），而另一些则需要额外的字节（例如，写命令需要计数和数据字节）
操作数说明:
n =读写寄存器的数量(要读取的字节 – 1)
r = 寄存器 (0 to 15)
x = 不关心
SPI 命令列表
| COMMAND TYPE |
COMMAND |
DESCRIPTION |
1st COMMAND BYTE |
2nd COMMAND BYTE |
|
System Control |
WAKEUP |
退出睡眠模式 |
0000 000x (00h, 01h) |
|
| SLEEP |
进入睡眠模式 |
0000 001x (02h, 03h) |
|
|
| SYNC |
同步AD转换 |
0000 010x (04h, 05h) |
0000-010x (04,05h) |
|
| RESET |
复位 |
0000 011x (06h, 07h) |
|
|
| NOP |
空指令 |
1111 1111 (FFh) |
|
|
|
Data Read |
RDATA |
读取数据 |
0001 001x (12h, 13h) |
|
| RDATAC |
连续读取数据 |
0001 010x (14h, 15h) |
|
|
| SDATAC |
停止读取数据 |
0001 011x (16h, 17h) |
|
|
| Read Register |
RREG |
读寄存器 rrrr |
0010 rrrr (2xh) |
0000_nnnn |
| Write Register |
WREG |
写寄存器rrrr |
0100 rrrr (4xh) |
0000_nnnn |
|
Calibration |
SYSOCAL |
系统失调校准 |
0110 0000 (60h) |
|
| SYSGCAL |
系统增益校准 |
0110 0001 (61h) |
|
|
| SELFOCAL |
自校正 |
0110 0010 (62h) |
|