DF69 datasheet(80/106 Pages) PADAUK

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DF69

DC Fan Controller

6-47

General Purpose Comparator Control Register (gpcc), IO address = 0x3e

Bit

Reset

R/W

Description

R/W

Enable general purpose comparator.

0 / 1 : disable / enable

When this bit is set to enable, please also set the corresponding analog input pins to be

digital disable to prevent IO leakage.

Comparator result of general purpose comparator.

0: plus input < minus input

1: plus input > minus input

R/W

Selection the sampled source of comparator result

0: result output NOT sampled by TM2_CLK

1: result output sampled by TM2_CLK

R/W

Inverse the polarity of the comparator result output

0: polarity is NOT inversed

1: polarity is inversed

3 – 1

000

R/W

Selection the negative source of general purpose comparator.

000 : PB7

001 : PB0

010 : band-gap output

011 : internal R

100 : PA3

101 : PA4

R/W

Selection the positive source of general purpose comparator.

0 : internal R

1 : PB0

6-48

General Purpose Comparator Selection Register (gpcs), IO address = 0x22

Bit

Reset

R/W

Description

General purpose comparator output enable (to PB0).

0 / 1 : disable / enable

General purpose comparator enables to wake up system.

0 / 1 : disable / enable

The system will be wake up from power down mode if the result goes high.

Selection of high range of general purpose comparator.

Selection of low range of general purpose comparator.

3 – 0

0000

Selection the voltage level of general purpose comparator.

0000 (lowest) ~ 1111 (highest)

Page 80 of 106

PDK-DS-DF69_V003 – Apr. 18, 2018

DF69 Datasheet(PDF) 80 Page - PADAUK Technology.

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