AFE4490 datasheet(45/69 Pages) TI

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AFE4400

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SBAS601D – DECEMBER 2012 – REVISED MAY 2013

ALED2STC: Sample Ambient LED2 Start Count Register (Address = 05h, Reset Value = 0000h)

D23

D22

D21

D20

D19

D18

D17

D16

D15

D14

D13

D12

ALED2STC[15:0]

D11

D10

ALED2STC[15:0]

This register sets the start timing value for the ambient LED2 signal sample.

Bits D[23:16]

Must be '0'

Bits D[15:0]

ALED2STC[15:0]: Sample ambient LED2 start count

The contents of this register can be used to position the start of the sample ambient LED2

signal with respect to the PRP, as specified in the PRPCOUNT register. The count is

specified as the number of 4-MHz clock cycles. Refer to the Using the Timer Module section

for details.

ALED2ENDC: Sample Ambient LED2 End Count Register (Address = 06h, Reset Value = 0000h)

D23

D22

D21

D20

D19

D18

D17

D16

D15

D14

D13

D12

ALED2ENDC[15:0]

D11

D10

ALED2ENDC[15:0]

This register sets the end timing value for the ambient LED2 signal sample.

Bits D[23:16]

Must be '0'

Bits D[15:0]

ALED2ENDC[15:0]: Sample ambient LED2 end count

The contents of this register can be used to position the end of the sample ambient LED2

signal with respect to the PRP, as specified in the PRPCOUNT register. The count is

specified as the number of 4-MHz clock cycles. Refer to the Using the Timer Module section

for details.

LED1STC: Sample LED1 Start Count Register (Address = 07h, Reset Value = 0000h)

D23

D22

D21

D20

D19

D18

D17

D16

D15

D14

D13

D12

LED1STC[15:0]

D11

D10

LED1STC[15:0]

This register sets the start timing value for the LED1 signal sample.

Bits D[23:17]

Must be '0'

Bits D[16:0]

LED1STC[15:0]: Sample LED1 start count

The contents of this register can be used to position the start of the sample LED1 signal with

respect to the PRP, as specified in the PRPCOUNT register. The count is specified as the

number of

4-MHz clock cycles. Refer to the Using the Timer Module section for details.

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