Functional Overview - Spectrum Digital TMS320DM6437 Technical Reference

• Single voltage power supply (+5V)
• Expansion connectors for daughter card use
• VLYNQ Interface
• S/PDIF Interface, analog, and optical
1.2 Functional Overview of the DM6437 EVM
DAC B
DAC C
DAC D
SVHS
OUT
SVHS
IN
Video IN
The DM6437 on the EVM interfaces to on-board peripherals through integrated device
interfaces and a 8-bit wide EMIF bus. The DDR2 memory is connected to its own
dedicated 32 bit wide bus. The EMIF bus is jumper selectable to be connected to the
Flash, SRAM, NAND, and daughter card expansion connectors which are used for
add-on boards.
On board video decoder and on chip encoders interface video streams to the DM6437
processor. One TVP5146M2 decoder and 4 on chip DAC channels are standard on the
EVM (only 3 output connectors are populated so that the board can fit in a PCI slot).
On screen display functions are implemented in software on the DM6437 processor.
An on-board AIC33 codec allows the DSP to transmit and receive analog audio
signals. The I
the audio stream. Signal interfacing is done through 3.5mm audio jacks that correspond
to microphone input, line input, line output, and headphone outputs.
The EVM includes 4 user LEDs, and 4 position user DIP switch which can be used to
provide the user with interactive feedback. These interfaces are implemented via
2
I C expanders.
DIP
RST
DAC
1 2 3 4
Out
LEDs
NOR
Flash
EMIF
DM6437
BM0
AEM2
BM1
AEM1
BM2
AEM0
BM3
AEAW2
FASTB
Video Port
Video
Decoder
PCI
PCI Connector
Figure 1-2, Block Diagram DM6437 EVM
2
C bus is used for the codec control interface, while the McBSP controls
ENET
Ext JTAG
RJ45
POR
Embedded
ENET
JTAG Emulator
PHY
UARTs
MII
32
JTAG
McBSP0 SPI ROM
2
I C Bus VLNQ
Mini PCI
Spectrum Digital, Inc
CAN RS-232
UART/CAN Switches
MIC IN
LINE IN
AIC33
Codec
LINE OUT
HP Out
McBSP1 or McASP0
1.8V Supply
S/PDIF
(optical)
1.2V Core Supply
S/PDIF
3.3V I/O Supply
1-3