Digilent 410-191P - Manual

P P m m o o d d I I
2 2
s s R R e e f f e e r r e e n n c c e e M M a a n n u u a a l l
Revision: August 8, 2013
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Copyright Digilent, Inc. 1 pages Doc: 502-191
Overview
The Digilent PmodI
2 S is a peripheral module
that provides a D/A converter allowing for high
quality stereo sound from a digital source. This
module provides an easy interface for
converting digital samples into an analog
signal with a wide arrange of sample rates and
a large dynamic range.
Features include:
•
Cirrus Logic CS4344 Stereo D/A
converter
•
1/8-inch stereo headphone jack
• 6-pin header Pmod
TM
interface
connector
•
3V-5V operating voltage
•
Small form factor (.8” x 1.15”)
Functional Description
The Digilent PmodI
2 S contains a Cirrus Logic
CS4344 stereo D/A converter that supports all
major audio data interface formats and allows
16 to 24 bits of audio data at standard audio
sample rates, including 48, 96 and 192 Khz.
Interface
The PmodI
2 S runs off a master clock (MCLK)
input that can be set from 500khz to 50Mhz.
Audio data is supplied to the serial data input
(SDIN) where it is clocked in by an optional
serial clock (SCLK). If the SCLK is left de-
asserted, the CS4344 will automatically set the
sample rate based on the MCLK and LRCK.
Either way the LRCK will control which channel
is currently being read by the CS4344.
Power Supply
The PmodI
2 S is designed to work with either
Digilent programmable logic or Digilent
embedded control system boards that have 6
or 12-pin header connectors into which the
PmodI
2 S will connect directly.
The PmodI
2 S requires a 3V-5V supply voltage.
This power supply voltage (3.3V) is available
on all Digilent system boards and is provided
as part of the Pmod interface. Digilent system
boards that provide Pmod interface connectors
allow jumper selection of the power supply
voltage being provided to the Pmod. Ensure
that the system board is jumpered to provide
3.3V to the module before applying power to
the board.
For more information about the operational
features and timing diagrams of the Cirrus
CS4344 please refer to the
CS4344 Data
Sheet