Cirrus Logic CDB47xxx, Руководство пользователя

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6-1 Copyright 2012 Cirrus Logic, Inc. DS886DB9
Introduction
CDB47xxx User’s Manual
Chapter 6
CDB47xxx Schematics
6.1 Introduction
The schematics included in this document are the original Revision A schematics of the CDB47xxx and
reflects the board as it was manufactured. Newer schematics may be available that incorporate feature
additions or corrections, and may not match Rev. A hardware.
6.2 CDB47xxS Single-Ended Schematic Descriptions
6.2.1 CDB47xxxS Block Diagram
Figure 6-1 shows the CDB47xxxS block diagram.
6.2.2 Daughtercard Connectors
Figure 6-3 shows the schematic for the daughtercard connectors on the CDB47xxxS board.
The digital connector (J2) carries the following signals:
• Serial Control signals for host control of the CS470xx
• Serial Control signals from CS470xx to the SPI Flash and I²C EEPROM
• Serial Audio Data and Clocks going to the DAI of the CS470xx
• Serial Audio Data and Clocks coming from the DAO of the CS470xx
The analog connector (J3) carries the following signals:
• 8 channels of line-level analog from the CS470xx DACs - can support differential or single-ended
signaling
• 12 channels of line-level analog to the CS470xx ADCs - can support differential or single-ended
signaling
The microphone input is routed to AIN_6A. The AIN_6B channel can be used for mono line-level input.
6.2.3 Digital Audio and Control Connectors
Figure 6-4 shows the schematics for the digital audio and control connectors on the CDB47xxxS board.
The audio input connectors consist of the following:
• 1 RCA jack for coaxial S/PDIF input
• 1 optical jack for optical S/PDIF input
• 1 2x10 header for serial audio data (I
2
S)