Microchip Technology MA330019-2 Data Sheet

© 2007-2012 Microchip Technology Inc.

DS70292G-page 255

The dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/
X04, and dsPIC33FJ128GPX02/X04 Data Converter
Interface (DCI) module allows simple interfacing of
devices, such as audio coder/decoders (Codecs), ADC
and D/A converters. The following interfaces are
supported:
• Framed Synchronous Serial Transfer (Single or 

Multi-Channel)

• Inter-IC Sound (I

2

S) Interface

• AC-Link Compliant mode
• The DCI module provides the following general 

features:

• Programmable word size up to 16 bits
• Supports up to 16 time slots, for a maximum 

frame size of 256 bits

• Data buffering for up to 4 samples without CPU 

overhead

Note 1: This data sheet summarizes the features

of the dsPIC33FJ32GP302/304,
dsPIC33FJ64GPX02/X04, and
dsPIC33FJ128GPX02/X04 families of
devices. It is not intended to be a compre-
hensive reference source. To comple-
ment the information in this data sheet,
refer to Section 20. “Data Converter
Interface (DCI)” (DS70288) of the
“dsPIC33F/PIC24H Family Reference
Manual”, which is available from the
Microchip website (

www.microchip.com

).

2: Some registers and associated bits

described in this section may not be avail-
able on all devices. Refer to 

 in this data

sheet for device-specific register and bit
information.

BCG Control bits

16-bit Dat

a 

B

us

Sample Rate

Generator

SCKD

FSD

DCI Buffer

Frame

Synchronization

Generator

Control Unit

DCI Shift Register

Receive Buffer 
Registers w/Shadow 

F

OSC

/4

Word Size Selection bits

Frame Length Selection bits

DCI Mode Selection bits

CSCK

COFS

CSDI

CSDO

15

0

Transmit Buffer 
Registers w/Shadow