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FXPS7115D4S 数据表(PDF) 40 Page - NXP Semiconductors |
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FXPS7115D4S 数据表(HTML) 40 Page - NXP Semiconductors |
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40 / 72 page  NXP Semiconductors FXPS7115D4S Digital absolute pressure sensor, 40 kPa to 115 kPa SPI_CRC_LEN[1:0] SPICRCSEED CRC Polynomial CRC Seed 0 0 0 x8 + x5 + x3 + x2 + x + 1 1111, 1111 0 0 non-zero x8 + x5 + x3 + x2 + x + 1 0000, SPICRCSEED[3:0] 0 1 0 x4 + 1 1010 0 1 non-zero x4 + 1 SPICRCSEED[3:0] 1 0 0 x3 + x + 1 111 1 0 non-zero x3 + x + 1 SPICRCSEED[2:0] 1 1 0 x3 + x + 1 111 1 1 non-zero x3 + x + 1 SPICRCSEED[2:0] Table 60. SPI CRC Definition 7.7.9 WHO_AM_I - who am I register (address 3Eh) The WHO_AM_I register is a user programmed read/write register that contains the unique product identifier. This register is included in the read/write array error detection. Bit 7 6 5 4 3 2 1 0 Symbol WHO_AM_I[7:0] Factory default (stored value) 0 0 0 0 0 0 0 0 Factory default (read value) 1 1 0 0 0 1 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 61. WHO_AM_I - device identification register (address 3Eh) bit allocation The default register value is 00h. If the register value is 00h, a value of C4h is transmitted in response to a read command. For all other register values, the actual register value is transmitted in response to a read command. WHO_AM_I register value (hex) Response to a register read command 00h C4h 01h to FFh Actual register value Table 62. WHO_AM_I register values 7.7.10 I2C_ADDRESS - I2C client address register (address 3Fh) The I2C client address register is a user programmed read/write register that contains the unique I2C client address. The register is readable in all modes. This register is included in the read/write array error detection. Bit 7 6 5 4 3 2 1 0 Symbol I2C_ADDRESS[7:0] Factory Default (stored value) 0 0 0 0 0 0 0 0 Factory Default (read value) 0 1 1 0 0 0 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 63. I2C_ADDRESS - I2C client address register (address 3Fh) bit allocation The default register value is 00h. If the register value is 00h, the I2C client address is 60h and a value of 60h is transmitted in response to a read command. If the register is written to a value other than 00h, the I2C client address is the lower seven bits of the actual register value and the actual register value is transmitted in response to a read command. 7.7.11 DSP Configuration Registers (DSP_CFG_Ux) The DSP Configuration registers (DSP_CFG_Ux) are a series of registers that affect the DSP data path. FXPS7115D4S All information provided in this document is subject to legal disclaimers. © 2023 NXP B.V. All rights reserved. Objective data sheet Rev. 1.2 — 28 June 2023 40 / 72 |
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