AFE4403 datasheet(71/97 Pages) TI

71 / 97 page

AFE4403

www.ti.com

SBAS650B – MAY 2014 – REVISED JULY 2014

Figure 103. PRPCOUNT: Pulse Repetition Period Count Register (Address = 1Dh, Reset Value = 0000h)

PRPCOUNT[15:0]

This register sets the device pulse repetition period count.

Bits 23:16

Must be 0

Bits 15:0

PRPCOUNT[15:0]: Pulse repetition period count

The contents of this register can be used to set the pulse repetition period (in number of

clock cycles of the 4-MHz clock). The PRPCOUNT value must be set in the range of 800 to

64000. Values below 800 do not allow sufficient sample time for the four samples; see the

Electrical Characteristics table.

Figure 104. CONTROL1: Control Register 1 (Address = 1Eh, Reset Value = 0000h)

TIMEREN

NUMAV[7:0]

This register configures the clock alarm pin and timer.

Bits 23:9

Must be 0

Bit 8

TIMEREN: Timer enable

0 = Timer module is disabled and all internal clocks are off (default after reset)

1 = Timer module is enabled

Bits 7:0

NUMAV[7:0]: Number of averages

Specify an 8-bit value corresponding to the number of ADC samples to be averaged – 1.

For example, to average four ADC samples, set NUMAV[7:0] equal to 3.

The maximum number of averages is 16. Any setting of NUMAV[7:0] greater than or equal

to a decimal value of 15 results in the number of averages getting set to 16.

Figure 105. SPARE1: SPARE1 Register For Future Use (Address = 1Fh, Reset Value = 0000h)

This register is a spare register and is reserved for future use.

Bits 23:0

Must be 0

Submit Documentation Feedback

Product Folder Links: AFE4403

AFE4403 Datasheet(PDF) 71 Page - Texas Instruments