Datasheet

Hardware
© 2007 Microchip Technology Inc. DS70297A-page 17
2.2.18 Codec Oscillator (Y1)
Codec Oscillator Y1 (Ref 19) provides a required 12 MHz master clock signal to the
16-bit Codec (U2).
See Figure A-5 for a complete schematic of the Codec.
2.2.19 Flash Memory (U1)
The Audio PICtail Plus Daughter Board includes a serial Flash memory chip (Ref 2).
This memory is write protected when the jumper pin is inserted in WP (Jumper J6).
See Figure A-6 for a complete schematic of the Flash memory circuit.
2.2.20 Flash Memory Write-Protect Jumper (J6)
When the jumper pin is inserted in WP (Ref 1), write operations to the serial Flash
memory have no effect.
2.2.21 Explorer 16 PICtail Connector (J2)
The Audio PICtail Plus Daughter Board connects to the Explorer 16 board using edge
connector J3 (Ref 20). The Audio PICtail
Plus Daughter Board uses these Explorer 16
signals:
• +3.3V power
• +5V power
•Ground
• dsPIC33F device DCI module signals
• dsPIC33F or PIC24H Output Compare module signals
• dsPIC33F or PIC24H SPI 2 module signals
• dsPIC33For PIC24H I2C 2 module signals
• dsPIC33F or PIC24H ADC module inputs
2.2.22 28-Pin Starter Development Board Connector (J3)
The 28-Pin Starter Development Board Connector (Ref 8) allows the Audio PICtail Plus
Daughter Board to be connected to Microchip's 28-Pin Starter Development Board.
CAUTION
To avoid damage to the Audio PICtail Plus Daughter Board, the 28-Pin Starter
Development Board must operate a +3.3V when it is connected to the Audio PICtail
Plus
Daughter Board.