CDB48500-USB Cirrus Logic Inc, CDB48500-USB Datasheet - Page 20

• Manufacturer Part Number: CDB48500-USB
• Description: KIT USB EVALUATION FOR CDB48500
• Manufacturer: Cirrus Logic Inc

Specifications of CDB48500-USB

• Main Purpose: Audio, Audio Processing
• Embedded: No
• Utilized Ic / Part: CS485XX
• Primary Attributes: 32-Bit Audio Processor, I2C or SPI
• Secondary Attributes: Graphic User Interface, 12-ch Analog Audio Input & Outputs, Optical Out- S/PDIF
• Description/function: Audio A/D
• Operating Supply Voltage: 9 V to 12 V
• Product: Audio Modules
• Supply Current: 1 A
• For Use With/related Products: CS48520, CS48540, CS48560
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1284

DS784DB1
3.1.6 Audio Input Source Multiplexer Selection Headers
3.1.7 Cirrus Logic CS485xx Audio DSP
The CDB48500-USB includes jumpers to change DSP DAI inputs.
These multiplexers are used to select which audio sources feed the CS485XX DAI pins. When the on-
board sources (CS8416, U3 and CS42448, U4 and U5) are being used, the CDB USB MASTER data
cannot be processed.
The CDB48500 contains a header to connect DAI pins, DAO pins, and clocks to external circuitry. The
DAO and clock pins are
The CS485xx audio DSP (U6) are a family of 32-bit fixed point processors designed specifically for audio
applications. The CDB48500 allows a designer to evaluate the CS485xx DSPs in many different modes of
multi-channel input and output. The 48-pin footprint on this board is compatible with any CS485XX chip.
Audio input data to the DSP can come from any of the following sources:
Audio output data from the DSP can be sent to the following destinations:
The CS485XX has many applications stored in internal ROM, but a host is still required to configure the
application for a particular system. The CDB48500-USB allows the PC to act as a host to boot and
configure the DSP through the GUI software.
The CS485XX can also be booted from external serial flash for custom applications that are not stored in
the DSP’s ROM.
Note: The 48-pin footprint on this board is also compatible with the CS485XX family of DSPs. The
• Source 0: CDB USB MASTER Board, controlled from Software (Refer to
• Source 1: 2 Channels from CS8416 and 8 channels from (2)CS42448, short pins 2 and 3 of J100
• Source 2: 12 Channels from (2)CS42448 codecs, short pins 1 and 2 of J100
• Reference Designators: U1, U2, U9, U18, and J100
• DAI[5,3:0] feed from J102 header, short pins 1 and 3 on J101
• DAI[5,3:0] feed from on board sources, short pins 3 and 5 on J101
• DAI[4] feed from J102 header, short pins 2 and 4 on J101
• DAI[4] feed from on board sources, short pins 4 and 6 on J101
• The DAO pins and clocks are paralleled to both the on board devices and J102, J103 headers
• CS8416 (U3)
• CS42448 (U4 and U5)
• CDB USB MASTER card
• Header for external codecs (not yet supported)
• Both CS42448’s for conversion to Analog Output (AOUT_1A - AOUT_6B)
• Optical S/PDIF Out (SPDIF_TX), this option disables AOUT_4A and AOUT_4B
• CDB USB MASTER card
the Audio Input Source” on page
CDB48500 can support any CS485XX chip if the alternate stuffing options shown on the DSP
schematic page have been followed.
©
Copyright 2008 Cirrus Logic , Inc.
4-3)
CDB485x00-USB Evaluation Kit Guide
CDB48500 System Block Descriptions
Section 4.2.2, “Changing
3-4