CRD-5376 Cirrus Logic Inc, CRD-5376 Datasheet - Page 24

• Manufacturer Part Number: CRD-5376
• Description: Audio Modules & Development Tools Ref Bd LP Mlt-Ch Decimation Filter
• Manufacturer: Cirrus Logic Inc

Specifications of CRD-5376

• Description/function: Audio D/A
• Operating Supply Voltage: 3.3 V
• Product: Audio Modules
• Supply Current: 300 mA
• For Use With/related Products: CS3301A, CS3302A, CS4373A, CS5371A, CS5372A, CS5376A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Many connections to the C8051F320 microcontroller are inactive by default, but are provided for conve-
nience during custom reprogramming. Listed below are the default active connections to the microcon-
troller and how they are used.
2.3.2.1
The microcontroller SPI interface communicates with the CS5376A digital filter to write/read configuration
information from the SPI 1 port and collect conversion data from the SD port. Detailed information about
interfacing to the digital filter SPI 1 and SD ports can be found in the CS5376A data sheet.
2.3.2.2
The microcontroller USB interface communicates with the PC evaluation software to receive configuration
commands and return collected conversion data. The USB interface uses the Silicon Laboratories API
and Windows drivers, which are available free from the internet (http://www.silabs.com).
2.3.2.3
By default, the C8051F320 microcontroller receives its reset signal from the internal power-on reset. This
reset signal is also output to the CS5376A digital filter.
2.3.2.4
By default, the C8051F320 microcontroller uses an internally generated 12 MHz clock for compatibility
with USB standards.
24
Pin #
17
18
19
20
21
22
23
24
Pin #
25
26
27
28
29
30
31
32
SPI Interface
USB Interface
Reset Source
Clock Source
Pin Name
P2.1
P2.0
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
Pin Name
P1.1
P1.0
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
Assignment Description
TIMEB
SYNC
BYP_EN
SDA_DE
SCL
SDA
SSIz
MOSI
Assignment Assignment
MISO
SCK1
SINTz
RX
TX
4.096MHZ
SDRDYz
Time Break signal to CS5376A
I2C bypass switch control
I2C data driver enable
I2C clock in/out
I2C data in/out
SPI chip select output, active low
SYNC signal to CS5376A
SPI master out / slave in
SPI master in / slave out
SPI serial clock
Internal VREF bypass capacitors
Serial acknowledge from CS5376A, active low
UART receiver
UART transmitter
External clock input
Data ready acknowledge from CS5376A, active low
CRD5376
DS612RD2