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參數(shù)資料
| 型號： | L3G4200D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA16 |
| 封裝： | 4 X 4 MM, 1.10 MM HEIGHT, GREEN, PLASTIC, LGA-16 |
| 文件頁數(shù)： | 17/42頁 |
| 文件大?。?/td> | 1279K |
| 代理商： | L3G4200D |
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Digital interfaces
L3G4200D
24/42
Doc ID 17116 Rev 3
Figure 13.
Read and write protocol
CS is the serial port enable and is controlled by the SPI master. It goes low at the start of the
transmission and returns to high at the end. SPC is the serial port clock and is controlled by
the SPI master. It is stopped high when CS is high (no transmission). SDI and SDO are,
respectively, the serial port data input and output. These lines are driven at the falling edge
of SPC and should be captured at the rising edge of SPC.
Both the read register and write register commands are completed in 16 clock pulses, or in
multiples of 8 in case of multiple read/write bytes. Bit duration is the time between two falling
edges of SPC. The first bit (bit 0) starts at the first falling edge of SPC after the falling edge
of CS while the last bit (bit 15, bit 23, etc.) starts at the last falling edge of SPC just before
the rising edge of CS.
Bit 0: RW bit. When 0, the data DI(7:0) is written to the device. When 1, the data DO(7:0)
from the device is read. In the latter case, the chip drives SDO at the start of bit 8.
Bit 1: MS bit. When 0, the address remains unchanged in multiple read/write commands.
When 1, the address is auto-incremented in multiple read/write commands.
Bit 2-7: address AD(5:0). This is the address field of the indexed register.
Bit 8-15: data DI(7:0) (write mode). This is the data that is written to the device (MSb first).
Bit 8-15: data DO(7:0) (read mode). This is the data that is read from the device (MSb first).
In multiple read/write commands, further blocks of 8 clock periods are added. When the MS
bit is 0, the address used to read/write data remains the same for every block. When the MS
bit is 1, the address used to read/write data is incremented at every block.
The function and the behavior of SDI and SDO remain unchanged.
5.2.1
SPI read
Figure 14.
SPI read protocol
CS
SPC
SDI
SDO
RW
AD5 AD4 AD3 AD2 AD1 AD0
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0
DO7DO6 DO5DO4 DO3DO2 DO1DO0
MS
CS
SPC
SDI
SDO
RW
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
AD5 AD4 AD3 AD2 AD1 AD0
MS
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相關代理商/技術參數(shù) |
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|---|---|
| L3G4200D_1012 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MEMS motion sensor: ultra-stable three-axis digital output gyroscope |
| L3G4200DH | 功能描述:螺旋儀 Digital Gyro 96 FIFO 250 / 500 / 2000 DPS RoHS:否 制造商:Murata 傳感軸:Triple 靈敏度: 輸出類型:Digital 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:5 mA 封裝 / 箱體: |
| L3G4200DHTR | 功能描述:螺旋儀 Digital Gyro 96 FIFO 250 / 500 / 2000 DPS RoHS:否 制造商:Murata 傳感軸:Triple 靈敏度: 輸出類型:Digital 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:5 mA 封裝 / 箱體: |
| L3G4200DTR | 功能描述:螺旋儀 MEMS 3-Axis Gyro 96 LVL FIFO 1.8V RoHS:否 制造商:Murata 傳感軸:Triple 靈敏度: 輸出類型:Digital 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:5 mA 封裝 / 箱體: |
| L3G4IS | 功能描述:螺旋儀 3-Axis MEMS Gryo 2.4 to 3.6v 3 Select RoHS:否 制造商:Murata 傳感軸:Triple 靈敏度: 輸出類型:Digital 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:5 mA 封裝 / 箱體: |
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