TSN Systems Box 3.0 - Audio Ports

TSN Box Development – TSN Box 3.0 Getting Started Guide
Hardware – 11
⑧ Output 2+
⑨ Ground Direct ground connection
⑩ VIN Directly connected to Power In (typically 12V)
Maximum hold current: 500mA
Overcurrent protection: 1A
2.4.8 Audio Ports
The Audio Moduleconsists of 8 x output channels and 4 x input channels. There are two audio codecs present on
the module, one is controlled by the FPGA and the other by the Host PC. The Host PC uses a Realtek ALC888 Codec
(CPU Mode) and the FPGA uses an Analog DevicesAD1938(FPGA Mode). The channels are multiplexed and is
software controlled.
• Input Impedance= 47kΩ (CPU mode) or11.4kΩ (FPGA mode)
• Maximuminput voltage = 6.0Vpp
• Maximumoutputvoltage =3.3Vpp
Belowarethe pindescriptionsof each 3.5mm stereo connector:
 CPUmode FPGAmode
Audio Port Tip Ring Sheath Tip Ring Sheath
1 / 2 Front-L Front-R GND Out 2 Out 1 GND
3 / 4 Surr.-L Surr.-R GND Out 4 Out 3 GND
5 / 6 Centre LFE GND Out 6 Out 5 GND
7 / 8 Side-L Side-R GND Out 8 Out 7 GND