AS3648 datasheet(23/39 Pages) AMSCO

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AS3648

Datasheet, Confidential - D e ta i l e d D e s c r i p t i o n

Table 6. ChipID Register

Addr: 0

ChipID Register

This register has a fixed ID

Bit

Bit Name

Default Access

Description

2:0

version

AS3648 chip version number

7:3

fixed_id

10110b

This is a fixed identification (e.g. to verify the I

communication)

Table 7. Current Set LED1 Register

Addr: 1

Current Set LED1 Register

This register defines design versions

Bit

Bit Name

Default Access

Description

7:0

led_current1

9Ch

R/W

Caution: Define the current on pin LED_OUT1assist

mode uses bits 6:0 of this current setting

(max. half of full current setting)

indicator or low current pwm mode uses only

5:0 of this current setting (max. 1/4 of full

current setting)

0mA

3.5mA

7.1mA

...

3Fh

222.4mA (maximum current for indicator or low

current pwm mode, mode_setting=01)

...

7Fh

448.2mA (maximum current for assist light mode,

mode_setting=10)

...

9Ch

551mA - default setting

...

FEh

896.5mA (996.1mA

1 if current_boost=1)

1. Do not use current_boost=1 for currents <= 900mA

FFh

900mA (1000mA

1 if current_boost=1)

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