L9966 datasheet(82/122 Pages) STMICROELECTRONICS

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16.7

CURR_SRC_CTRL_[9:12]

RW (LSF_MD_x = 0),

R (LSF_MD_x = 1)

RW (LSF_MD_x = 0),

R (LSF_MD_x = 1)

Address:

0b0010_1001 up to 0b0010_1100

Description:

Current source control register

Table 59. CURR_SRC_CTRL_[9:12] register bit description

Range

Field name/description

Reset Value Reset Event

[15] Parity

Default

[14:11]

CIS[3:0]: Control channel selection

0000: Force to 0

0001: Channel 1

….

CIS == x: Select VRS or CTRL_CFG according to bit AUX_EVENCH or AUX_ODDCH

1111: Channel 15

0000

PORn

RSTn

[10:9]

CTR: Comparator threshold

00: Uth1

01: Uth2

10: Uth3

11: Uth Ratiometric

PORn

RSTn

[8:6]

CV[2:0] Current source value

When LSF_MDx(x=9:12) = ‘1’ . Other combination are not allowed

100: 1 µA (PU current to VVAR) - 250 µA (PU current to 5V_REF)

101: 1 µA (PU current to VVAR) - 500 µA (PU current to 5V_REF)

110: 20 µA (PU current to VVAR) - 250 µA (PU current to 5V_REF)

111: 20 µA (PU current to VVAR) - 500 µA (PU current to 5V_REF)

When LSF_MDx(x=9:12) = ‘0'

000: 7.5 µA (PU) - 1uA (PU-VVAR) - 600 µA(PD)

001: 20 µA (PU) - 20 µA (PD)

010: 250 µA (PU) - 100 µA (PD)

011: 500 µA (PU) - 500 µA (PD)

100: 1 mA (PU) - 1 mA (PD)

101: 5 mA (PU) - 5 mA (PD)

110: 10 mA (PU) - 10 mA (PD)

111: 20 mA (PU) - 20 mA (PD)

000

PORn

RSTn

L9966

CURR_SRC_CTRL_[9:12]

DS12459 - Rev 10

page 82/122

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