Cirrus Logic CDB470xx - Manual (Page 12)

1-5 Copyright 2014 Cirrus Logic, Inc. DS886DB11
CDB47xxx Main Board System Description
CDB47xxx User’s Manual
Figure 1-4. CDB47xxxD Main Board Block Diagram
1.3.1 Audio Inputs
1.3.1.1 Analog Line-level Inputs -- Single-Ended (CDB47xxxS only) (AIN1A - AIN5B,
AIN6B)
1
Analog line-level inputs have the following characteristics:
• Connector Type: RCA Female
• Absolute Maximum Signal Level: 8Vp-p
• Full Scale Amplitude: 2V RMS
1.3.1.2 Analog Line-level Inputs -- Differential (CDB47xxxD only) (AIN1A - AIN5B, AIN6B)
Analog line-level inputs have the following characteristics:
• Connector Type: 3.5mm (1/8”) Stereo Female
• Absolute Maximum Differential Signal Level: 16Vp-p
• Full Scale Differential Amplitude: 4V RMS
1. Reference designators are listed at the end of the heading for each board component listed in this
chapter.
CS47xxx
I2S IN HDR
I2S OUT
HDR
(8 ch)
8ch
RCA
OUT
Power In
USB MCU
Silicon Labs
SMALL
20-PIN HDR
SPI_HOLD
Control
Control
EXT CTRL
SE
L
Power
LEDs
5:1
mux
ADC
SPDIF
Rx
SPDIF Tx
DAC
I2S in
(8 ch)
I2S out
(8 ch)
Control
USB
(DSP
Composer)
Analog
Analog
Digital
Digital
Digital
DSP CORE
Digital
Use
DaughterCard
SRC
ADC
LCD Panel
Control (Parallel Port)
B1 B2 B3 B4
Buttons
Rotary Knob
GPIO
Mic Input
Jack
Mic
Pre-Amp
Circuitry
Stereo 1/8"
IN
2 ch (x4)
Stereo 1/8"
IN
2ch
GPIO
GPIO
HDR
SPDIF - IN
OPTICAL
SPDIF - IN
COAX
Wall Adapter
Buffer
Diff
Amp
Diff
Amp
20 Pin HDR
Standard 20 Pin Debug Header (Serial Control & Debug)
I2S HDRs
Header will be available to probe / bring in I2S signals
DSP Daughtercard
The Chronos DSP Daughercard will have only the DSP.
This allows us to easily swap out the DSP for different
CS47xxx Family members.
DAO Buttons/LEDs
DAO pins on Chronos are also GPIO. These buttons/LEDs
Can be used by the new primitives being developed
SPDIF - OUT
OPTICAL
Buffer
SPDIF - OUT
COAX
SPI
FLASH
I2C
FLASH