L7250 datasheet(20/46 Pages) STMICROELECTRONICS

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L7250

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[6:0]

Dac[14:8]

7 MSB for VCM dac

[7]

GainSwitch

0 = gain voltage of the VCM sense amplifier equal to 4.5 V/V

1 = gain voltage of the VCM sense amplifier equal to 16 V/V

[7:0]

Dac[7:0]

8 LSB for VCM dac

[7:0]

ADC_DATA[9:2]

8 MSB output data from ADC conversion

[0]

ADCSTART

0-> 1 starts a new ADC conversion

[2:1]

ADC_CH_ADDR[1:0]

Channel whose conversion is required

00 = VCM current sense amplifier output

01 = VCM voltage amplifier output

10 = VCM BEMF

11 = Auxiliary Channel (external pin)

[3]

ADCrange

0 = the 4 signals enter directly (maintaining the proper dynamic

range) the ADC block

1 = the 4 signals are scaled down to the ADC dynamic range

[5:4]

ADC_RES_ADDR[1:0]

Channel whose result conversion is currently present in

ADC_DATA

0DH [7:0]

reserved

0EH [7:0]

reserved

0FH [7:0]

Test[7:0]

Test register

Table 2. Register map content description (continued)

Bit

SPI field name

Content

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