Here is further information about ISD1700 chipcorders: http://www.nuvoton-usa.com/hq/enu/ProductAndSales/ProductLines/ConsumerElectronicsIC/ISDVoiceIC/ISDChipCorder/ISD1700.htm
Refer to the Design Guide for detailed information about the SPI mode.
Connect chipcorder's SPI pins to these Arduino pins:
- SCK --> digital pin 13
- MISO --> digital pin 12
- MOSI --> digital pin 11
- SS --> digital pin specified during class instantiating in your Arduino sketch (ie. ISD1700 chip(10); --> SS is attached to Arduino digital pin 10)