Datasheet

© 2009-2012 Microchip Technology Inc. Preliminary DS70616F-page 427
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
24.0 DATA CONVERTER
INTERFACE (DCI) MODULE
24.1 Module Introduction
The 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
General features include:
• 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
FIGURE 24-1: DCI MODULE BLOCK DIAGRAM
Note 1: This data sheet is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to “Section 20. Data Con-
verter Interface (DCI)” (DS70356) of the
“dsPIC33E/PIC24E Family Reference
Manual”, which is available from the
Microchip web site
(www.microchip.com).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.
BCG Control bits
16-bit Data Bus
Sample Rate
Generator
SCKD
FSD
DCI Buffer
Frame
Synchronization
Generator
Control Unit
DCI Shift Register
Receive Buffer
Registers w/Shadow
FP
Word Size Selection bits
Frame Length Selection bits
DCI Mode Selection bits
CSCK
COFS
CSDI
CSDO
15
0
Transmit Buffer
Registers w/Shadow