Datasheet

MAX9268 Evaluation Kit
Evaluates: MAX9268
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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 I
2
C device address
2-3 Selects U15 I
2
C device address
Open Reserved for factory diagnostic tests
JU152 U15 AD0
1-2* Selects U15 I
2
C device address
2-3 Selects U15 I
2
C device address
Open Reserved for factory diagnostic tests
JU153 U15 SDA
1-2*
Connects U15 MAX7324 to the I
2
C bus; MS must be low (SW1) and
CDS must be low (JU1 = 2-3 on both boards)
Open Disconnects U15 MAX7324 from the I
2
C bus; MS can be high (SW1)
JU154 U15 SCL
1-2*
Connects U15 MAX7324 to the I
2
C bus; MS must be low (SW1) and
CDS must be low (JU1 = 2-3 on both boards)
Open Disconnects U15 MAX7324 from the I
2
C bus; MS can be high (SW1)
JU191 AUDIO_SCL
1-2* U12 sends I
2
C initialization commands to audio chip U20
Open Disconnects the audio I
2
C bus pullup resistor
JU192 AUDIO_SCL
1-2* U12 sends the I
2
C initialization commands to audio chip U20
Open Disconnects the audio I
2
C bus
JU193 AUDIO_SDA
1-2* U12 sends the I
2
C initialization commands to audio chip U20
Open Disconnects the audio I
2
C bus pullup resistor
JU194 AUDIO_SDA
1-2* U12 sends the I
2
C initialization commands to audio chip U20
Open Disconnects the audio I
2
C bus
JU201 U20 ADD
1-2*
U20 ADD = GND
Selects U20 device address 0010 000x (0x20) (on audio I
2
C bus)
3-4
U20 ADD = IOVDD
Selects U20 device address 0010 001x (0x22) (on audio I
2
C bus)
5-6
U20 ADD = AUDIO_SDA
Selects U20 device address 0010 011x (0x26) (on audio I
2
C 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