Altera LCD Multimedia HSMC - Manual (Page 23)

2–15 Altera Corporation
LCD Multimedia HSMC August 2008
Interfaces/ Connectors
Interfaces/
Connectors This section describes the following LCD Multimedia HSMC’s
interface/connector blocks:
■ Audio Codec Interface (J1, J2, J3)
■ SD Card socket (J4)
■ Ethernet connector (J5)
■ RS 232 connector (J8)
■ UART and PS/2 connector (J9)
■ Video Decoder connector (J11)
■ VGA DAC connector (J12)
Audio Codec Interface
The board provides 24-bit CD-Quality audio via the Wolfson WM8731
audio CODEC (enCODer/DECoder).
Table 2–9 lists Audio Codec
Interface board reference and manufacturing information.
The Audio Codec Interface features:
■ 24-bit sigma-delta audio CODEC
■ Line-level input, line-level output, and microphone input jacks
■ Sampling frequency: 8 to 96 KHz
This chip supports microphone-in (J1), audio-in (J2), and audio-out (J3)
ports, with a sample rate adjustable from 8 kHz to 96 kHz. The WM8731
is controlled by a serial I2C bus interface, which is connected to pins on
the HSMC connector.
Table 2–9. Audio Codec Interface Manufacturing Information
Board Reference Device Description Manufacturer
Manufacturer Part
Number
Manufacturer Website
U1 CD quality, low power,
high quality audio codec. Wolfson
Microelectronics WM8731 www.wolfsonmicro.com