AD7879 datasheet(19/36 Pages) AD

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AD7879

Rev. 0 | Page 19 of 36

Table 9. Register Table

Address1

Name

Description

Default

Value

Type

0x00

Unused

0x0000

R/W

0x01

Control Register 1

PENIRQ enable, channel selection for manual selection, ADC mode,

acquisition time, and conversion timer

0x0000

R/W

0x02

Control Register 2

ADC power management, GPIO control, pen interrupt, averaging,

median filter, software reset, and FCD

0x4040

R/W

0x03

Control Register 3

Status of high/low limit comparisons for TEMP, AUX/VBAT and enable bits to

allow them to become interrupts; channel selection for slave/master mode

0x0000

R/W

0x04

AUX/VBAT high limit

AUX/VBAT high limit for comparison

0x0000

R/W

0x05

AUX/VBAT low limit

AUX/VBAT low limit for comparison

0x0000

R/W

0x06

TEMP high limit

TEMP high limit for comparison

0x0000

R/W

0x07

TEMP low limit

TEMP low limit for comparison

0x0000

R/W

0x08

X+

X+ measurement for Y position

0x0000

0x09

Y+

Y+ measurement for X position

0x0000

0x0A

X+ (Z1)

X+ measurement for touch pressure calculation (Z1)

0x0000

0x0B

Y− (Z2)

Y− measurement for touch pressure calculation (Z2)

0x0000

0x0C

AUX/VBAT

AUX/VBAT measurement

0x0000

0x0D

TEMP

Temperature conversion Measurement

0x0000

0x0E

Revision and device ID

0x0

379 (AD7879-1)

0x0

37A (AD7879)

1 Do not write to addresses outside the register map.

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