CDB5374 Cirrus Logic Inc, CDB5374 Datasheet - Page 24

• Manufacturer Part Number: CDB5374
• Description: Audio Modules & Development Tools 2-Ch DS Modulator & Hydrophone Demo Brd
• Manufacturer: Cirrus Logic Inc

Specifications of CDB5374

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.3.3
The reset, synchronization, and timebreak signals to the CS5376A digital filter can be generated by push
buttons, received from external inputs or generated by the on-board microcontroller. By default, the push
button RESET_PB, SYNC_PB, and TIMEB_PB signals are connected through the interface CPLD to the
CS5376A digital filter RESET, SYNC, and TIMEB inputs.
A four-position DIP switch on CDB5374 (S5) sets static digital control signals not normally changed during
operation. The BOOT signal (S5, #1) controls how the CS5374A digital filter receives configuration data,
either from a microcontroller or serial EEPROM.
2.3.4
Included on CDB5374 is an 8051-type microcontroller with integrated hardware SPI and USB interfaces.
This C8051F320 microcontroller is a product of Silicon Laboratories (http://www.silabs.com). Key features
of the C8051F320 microcontroller are:
The exact use of these features is controlled by embedded firmware.
C8051F320 has dedicated pins for power and the USB connection, plus 25 general-purpose I/O pins that
connect to the various internal resources through a programmable crossbar. Hardware connections on
CDB5374 limit how the blocks can operate, so the port mapping of microcontroller resources is detailed
below.
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8051 compatibility – uses industry-standard 8051 software development tools
In-circuit debugger – software development on the target hardware
Internal memory – 16k flash ROM and 2k static RAM included on-chip
Multiple serial connections – SPI, USB, I
High performance – 25 MIPS maximum
Low power – 0.6 mA @ 1 MHz w/o USB, 9 mA @ 12 MHz with USB
Small size – 32 pin LQFP package, 9mm x 9mm
Industrial temperature – full performance (including USB) from -40 C to +85 C
Internal temperature sensor – with range violation interrupt capability
Internal timers – four general purpose plus one extended capability
Power on reset – can supply a reset signal to external devices
Analog ADC – 10-bit, 200 kSps SAR with internal voltage reference
Analog comparators – arbitrary high/low voltage compare with interrupt capability
Digital Control Signals
Microcontroller
2
C, and UART
CDB5374
DS862DB1