AS7038RB datasheet(112/127 Pages) AMSOSRAM

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AS7038RB

Functional Description

Datasheet

• PUBLIC

DS000726

• v2-00 • 2021-Jun-02

126

│ 111

Addr: 0x00

CONTROL

Bit

Bit Name

Default

Access

Bit Description

osc_en

Enable the oscillator. The oscillator

must be enabled for any analog block

(ADC, sequencer, optical frontend,

sequencer); not mandatory for current

sinks or ECG amplifier

ldo_en

If the EN input is not asserted, the chip

is in reset If asserted, I²C transactions

are possible. Upon assertion of

ldo_en, the reference and the LDO are

enabled The LDO must be enabled for

anything but plain I²C register

read/write

GPIO_A (Address 0x08)

Figure 153:

GPIO_A Register

Addr: 0x08

GPIO_A

Bit

Bit Name

Default

Access

Bit Description

7:4

Not used

gpio3_a

1=Put GPIO3 in analog mode; set this

bit when used for an analog function

e.g. the electrical frontend.

If set execute following I²C commands

(otherwise an internal pulldown will be

enabled) in this sequence:

Write 0x47 to register 0xC6

Write 0x0C to register 0xC2

Write 0x0C to register 0xC3

gpio2_a

1=Put GPIO2 in analog mode

If set execute following I²C commands

(otherwise an internal pulldown will be

enabled) in this sequence:

Write 0x47 to register 0xC6

Write 0x0C to register 0xC2

Write 0x0C to register 0xC3

gpio1_a

1=Put GPIO1 in analog mode

gpio0_a

1=Put GPIO0 in analog mode

AS7038RB Datasheet(PDF) 112 Page - ams-OSRAM AG

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