Datasheet

MAX9860 Evaluation Kit
Evaluates: MAX9860
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Table 1. Jumper Descriptions (JU1–JU11)
*Default position.
Detailed Description of Hardware
The MAX9860 EV kit is a complete digital audio evalua-
tion system for the MAX9860 mono audio codec. The EV
kit provides translation between the digital audio signals
and optical S/PDIF signals to allow easy connection with
consumer electronics devices. See Table 1 for a descrip-
tion of all EV kit jumper configurations.
Clocking
On-Board Clock
The EV kit has one 12.288MHz and one 13MHz clock
oscillator on the board to provide flexible master-clock
selections for the MAX9860.
Recovered Clock
When the S/PDIF IN has a digital audio input and the
S/PDIF transceiver is in operation, the recovered clock
from the S/PDIF transceiver can be used as the master
clock for the MAX9860.
External Clocks
Connect an external clock source to the jumper JU8 cen-
ter pin on the 5th row to drive the MAX9860’s MCLK pin
without using the on-board oscillator. The user must type
in the correct clock frequency in the MCLK Frequency
edit box.
JUMPER SHUNT POSITON DESCRIPTION
JU1
Open* MICLP disconnected from MICBIAS
1-2
MICLP connected to MICBIAS through a 2.2kI resistor
JU2
Open* MICLN disconnected from GND
1-2 MICLN connected to GND
JU3
Open* MICLN disconnected from GND
1-2
MICLN connected to GND through a 2.2kI resistor
JU4
Open* MICRP disconnected from MICBIAS
1-2
MICRP connected to MICBIAS through a 2.2kI resistor
JU5
Open* MICRN disconnected from GND
1-2 MICRN connected to GND
JU6
Open* MICRN disconnected from GND
1-2
MICRN connected to GND through a 2.2kI resistor
JU7
1-2* MAX9860 DVDDIO connected to the on-board 3.3V supply
Open MAX9860 DVDDIO applied externally on the DVDDIO pad
JU8
2-3* (all rows) MAX9860 connected to the on-board I
2
S and I
2
C interfaces
Open MAX9860 I
2
S and I
2
C interfaces available for the user-supplied equipment
JU9
1-2* MAX9860 AVDD connected to the on-board 1.8V supply
Open MAX9860 AVDD applied externally on the AVDD pad
JU10
1-2* MAX9860 DVDD connected to the on-board 1.8V supply
Open MAX9860 DVDD applied externally on the DVDD pad
JU11
1-2* CS8427 powered by 5V USB supply
Open CS8427 powered by external supply on the CS8427_5V pad