NXP Semiconductors

42

CD1020

7.10.17 LPM voltage threshold SP configuration

The CD1020 is able to use different voltage thresholds to wake-up from LPM. When configured as SG, a Logic [0] means the input will

use the LPM delta voltage threshold to determine the state of the switch. A Logic [1] means the input uses the Normal threshold (VICTHR)

to determine the state of the switch. When configured as an SB, it only uses the 4.0 V threshold regardless of the status of the LPM voltage

threshold bit. The user must ensure that the correct current level is set to allow the crossing of the normal mode threshold (typically 4.0 V).

7.10.18 LPM voltage threshold SG configuration

This means the input uses the LPM delta voltage threshold to determine the state of the switch. A Logic [1] means the input uses the

Normal threshold to determine the state of the switch. The user must ensure that the correct current level is set to allow the crossing of

the normal mode threshold (typically 4.0 V)

Table 29. LPM voltage threshold configuration SP register

Register address

R/W

SPI data bits [23 – 0]

[31–25]

[24]

bit 23

bit 22

bit 21

bit 20

bit 19

bit 18

bit 17

bit 16

0010_100

0/1

Unused

Default on POR

00

000

000

bit 15

bit 14

bit 13

bit 12

bit 11

bit 10

bit 9

bit 8

Unused

00

000

000

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

SP7

SP6

SP5

SP4

SP3

SP2

SP1

SP0

00

000

000

MISO return word

bit [23]

bit [22]

bits [21 – 0]

0010_100[R/W]

FAULT

STATUS

INTflg

Register Data

Table 30. LPM voltage threshold configuration SG register

Register address

R/W

SPI data bits [23 – 0]

[31–25]

[24]

bit 23

bit 22

bit 21

bit 20

bit 19

bit 18

bit 17

bit 16

0010_101

0/1

Unused

Default on POR

00

000

000

bit 15

bit 14

bit 13

bit 12

bit 11

bit 10

bit 9

bit 8

Unused

SG13

SG12

SG11

SG10

SG9

SG8

00

000

000

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

SG7

SG6

SG5

SG4

SG3

SG2

SG1

SG0

00

000

000

MISO return word

bit [23]

bit [22]

bits [21 – 0]

0010_101[R/W]

FAULT

STATUS

INTflg

Register Data