AS3682

Data Sheet

Control of CURR2, CURR3, CURR4 in Normal Mode and Soft Flash Mode

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Revision 2.21

29 - 43

Current2

(page 21), Current3 (page 21), and Current4 (page 22).

Any value other than zero will start the current sink. To stop the current, the register value must be set to zero.

Note: Unused current sinks should be left open and any associated register values must be set to 0mA.

Table 30. Current Sink2,3,4 Undervoltage Indication Registers

Addr: 0F

Curr_voltage_control

This register indicates if the voltage at any current sink has dropped below a predefined

value. If the charge pump is operating in automatic-mode (default), the contents of this

register can be disregarded. The voltages at current sinks 1x are used for automatic mode

selection of the charge pump. The voltages at current sinks 2, 3, and 4 can be optionally

used for automatic mode selection of the charge pump (see register Curr234_ctrl (page

29)).

Bit

Bit Name

Default

Access

Description

0

curr11_low_voltage

N/A

R

See curr11_low_voltage (page 26).

1

curr12_low_voltage

N/A

R

See curr12_low_voltage (page 26).

2

Curr13_low_voltage

N/A

R

See curr12_low_voltage (page 26).

3

Curr2_low_voltage

N/A

R

0 = Normal operation.

1 = Undervoltage occurred.

4

Curr3_low_voltage

N/A

R

0 = Normal operation.

1 = Undervoltage occurred.

5

Curr4_low_voltage

N/A

R

0 = Normal operation.

1 = Undervoltage occurred.

7:6

cp_status

N/A

R

See cp_status (page 30).

Addr: 09

Curr234_ctrl

CP_OUT. If the load of the current sink is connected to CP_OUT, that current sink will

contribute to the charge pump mode-selection algorithm.

Bit

Bit Name

Default

Access

Description

0

Curr2_onCP

0R/W

0 = The output of the current sink will not be used for automatic

mode selection of the charge pump.

1 = The output of the current sink is used for automatic mode

selection of the charge pump.

1

Curr3_onCP

0R/W

0 = The output of the current sink will not be used for automatic

mode selection of the charge pump.

1 = The output of the current sink is used for automatic mode

selection of the charge pump.

2

Curr4_onCP

0R/W

0 = The output of the current sink will not be used for automatic

mode selection of the charge pump.

1 = The output of the current sink is used for automatic mode

selection of the charge pump.

3

Curr234_gpio0_ctrl

0R/W

registers Current2 (page 23), Current3 (page 23), and

Current4

(page 23).

bit preview_ctrl (page 25) = 1 and bit Curr234_strobe_ctrl = 0.

6:4

N/A

7

Curr234_strobe_ctrl

0R/W

registers Current2 (page 23), Current3 (page 23), and

Current4

(page 23).

least one of curr11_on (page 24), curr12_on (page 24), or

curr13_on

(page 24).