MAX9268 datasheet(8/26 Pages) MAXIM

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MAX9268 Evaluation Kit

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Table 1. MAX9268 EV Kit Jumper Descriptions (continued)

JUMPER

SIGNAL

SHUNT POSITION

DESCRIPTION

JU11

INT

1-2

INT = high

2-3

INT = low

JU21

AVDD

1-2*

AVDD power from 3.3V LDO U2, powered by VIN

Open

AVDD must be provided from an external source

JU22

DVDD

1-2*

DVDD power from 3.3V LDO U2, powered by VIN

Open

DVDD must be provided from an external source

JU23

IOVDD

1-2*

IOVDD power from 3.3V LDO U2, powered by VIN

Open

IOVDD must be provided from an external source

JU121

Reserved

Not installed*

Reserved for factory diagnostic tests

JU141

TX/SCL

Not installed*

Connects U1–U12 through level translator U14

JU142

RX/SDA

Not installed*

Connects U1–U12 through level translator U14

JU143

LFLT

Not installed*

Connects U1 to the USB through level translator U14

JU144

INT

Not installed*

Connects U1 to the USB through level translator U14

JU151

U15 AD2

1-2*

Selects U15 I2C device address

2-3

Selects U15 I2C device address

Open

Reserved for factory diagnostic tests

JU152

U15 AD0

1-2*

Selects U15 I2C device address

2-3

Selects U15 I2C device address

Open

Reserved for factory diagnostic tests

JU153

U15 SDA

1-2*

Connects U15 MAX7324 to the I2C bus; MS must be low (SW1) and

CDS must be low (JU1 = 2-3 on both boards)

Open

Disconnects U15 MAX7324 from the I2C bus; MS can be high (SW1)

JU154

U15 SCL

1-2*

Connects U15 MAX7324 to the I2C bus; MS must be low (SW1) and

CDS must be low (JU1 = 2-3 on both boards)

Open

Disconnects U15 MAX7324 from the I2C bus; MS can be high (SW1)

JU191

AUDIO_SCL

1-2*

U12 sends I2C initialization commands to audio chip U20

Open

Disconnects the audio I2C bus pullup resistor

JU192

AUDIO_SCL

1-2*

U12 sends the I2C initialization commands to audio chip U20

Open

Disconnects the audio I2C bus

JU193

AUDIO_SDA

1-2*

U12 sends the I2C initialization commands to audio chip U20

Open

Disconnects the audio I2C bus pullup resistor

JU194

AUDIO_SDA

1-2*

U12 sends the I2C initialization commands to audio chip U20

Open

Disconnects the audio I2C bus

JU201

U20 ADD

1-2*

U20 ADD = GND

Selects U20 device address 0010 000x (0x20) (on audio I2C bus)

3-4

U20 ADD = IOVDD

Selects U20 device address 0010 001x (0x22) (on audio I2C bus)

5-6

U20 ADD = AUDIO_SDA

Selects U20 device address 0010 011x (0x26) (on audio I2C bus)

Open

Reserved

JU202

HPS

1-2*

U20 MAX9850 headphone sense controlled by the insertion of

headphones

Open

U20 MAX9850 headphone sense switch forced open

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