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MMA6901Q Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
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MMA6901Q Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 36 page Sensors Freescale Semiconductor 7 MMA690xQ SECTION 2 INTERNAL MODULES 2.1 DATA ARRAY A 400-bit data array allows each device to be customized. The array interface incorporates parity circuitry for fault detection along with a locking mechanism, to prevent unintended changes. Portions of the array are reserved for factory-programmed trim values. Customer accessible data stored in the array are shown in the Table 2-1. Addresses $00 - $0D are associated with the data array. A writable register at address $0E is provided for device control operations. Two read-only registers at addresses $0F and $10 provide status information. Unused bits within the data array are always read as ‘0’ values. Unprogrammed OTP bits are also read as ‘0’ values. F: Factory programmed OTP location R: Read-only register R/W: Read/write register N/A: Not applicable Table 2-1. DSP Configuration Register Location Bit Function Type Addr Register 7 6 5 4 3 2 1 0 $00 SN0 SN[7] SN[6] SN[5] SN[4] SN[3] SN[2] SN[1] SN[0] F/R $01 SN1 SN[15] SN[14] SN[13] SN[12] SN[11] SN[10] SN[9] SN[8] $02 SN2 SN[23] SN[22] SN[21] SN[20] SN[19] SN[18] SN[17] SN[16] $03 SN3 SN[31] SN[30] SN[29] SN[28] SN[27] SN[26] SN[25] SN[24] $04 DEVCFG0 0 0 0 0 RNG[3] RNG[2] RNG[1] RNG[0] F/R $05 DEVCFG1 0 0 0 0 RNG[3] RNG[2] RNG[1] RNG[0] $06 DEVCFG2 0 0 0 0 0 0 0 0 $07 DEVCFG3 0 0 0 0 0 0 0 0 $08 DEVCFG4 0 0 0 0 0 0 0 0 $09 DEVCFG5 1 0 1 0 0 0 0 0 $0A AXCFG_X 0 1 0 1 0 1 0 1 F/R $0B AXCFG_Y 0 1 0 1 0 1 0 1 $0C Unused N/A $0D DSPCFG 0 0 1 0 0 1 0 0 F/R $0E DEVCTL RES_1 RES_0 CE PCM_EN HPFB YINV ST1 ST0 R/W $0F TEMP TEMP[7] TEMP[6] TEMP[5] TEMP[4] TEMP[3] TEMP[2] TEMP[1] TEMP[0] R $10 DEVSTAT IDE OSCF DEVINIT TF 0 0 0 DEVRES $11 COUNT COUNT[7] COUNT[6] COUNT[5] COUNT[4] COUNT[3] COUNT[2] COUNT[1] COUNT[0] $24 ACC_X11L ACC_X[7] ACC_X[6] ACC_X[5] ACC_X[4] ACC_X[3] ACC_X[2] ACC_X[1] ACC_X[0] $25 ACC_X11H 0 0 0 0 0 ACC_X[10] ACC_X[9] ACC_X[8] $26 ACC_Y11L ACC_Y[7] ACC_Y[6] ACC_Y[5] ACC_Y[4] ACC_Y[3] ACC_Y[2] ACC_Y[1] ACC_Y[0] $27 ACC_Y11H 0 0 0 0 0 ACC_Y[10] ACC_Y[9] ACC_Y[8] |
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