参数资料
型号: LSM320HAY30TR
厂商: STMICROELECTRONICS
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PBGA28
封装: 4.40 X 7.50 MM, 1.10 MM HEIGHT, GREEN, PLASTIC, LGA-28
文件页数: 18/42页
文件大小: 501K
代理商: LSM320HAY30TR
LSM320HAY30
Digital interfaces
Doc ID 16917 Rev 1
25/42
Figure 9.
Multiple byte SPI write protocol (2 byte example)
6.2.3
SPI read in 3-wires mode
3-wires mode is entered by setting to ‘1’ bit SIM (SPI serial interface mode selection) in
LA_CTRL_REG4.
Figure 10.
SPI read protocol in 3-wires mode
The SPI Read command is performed with 16 clock pulses:
bit 0: READ bit. The value is 1.
bit 1: MS bit. When 0, do not increment the address. When 1, increment the address in
multiple reading.
bit 2-7: address AD(5:0). This is the address field of the indexed register.
bit 8-15: data DO(7:0) (read mode). This is the data that is read from the device (MSb first).
Multiple read command is also available in 3-wires mode.
CS
SPC
SDI
RW
AD5 AD4 AD3 AD2 AD1 AD0
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
MS
CS
SPC
SDI/O
RW
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
AD5 AD4 AD3 AD2 AD1 AD0
MS
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