TMS320DM641 datasheet(17/171 Pages) TI

17 / 171 page

Description

June 2003 − Revised August 2004

SPRS222C

In addition, the McASP0 transmitter may be programmed to output multiple S/PDIF, IEC60958, AES-3,

CP-430 encoded data channels simultaneously, with a single RAM containing the full implementation of user

data and channel status fields.

McASP0 also provides extensive error-checking and recovery features, such as the bad clock detection circuit

for each high-frequency master clock which verifies that the master clock is within a programmed frequency

range.

The VCXO interpolated control (VIC) port provides digital-to-analog conversion with resolution from 9-bits to

up to 16-bits. The output of the VIC is a single bit interpolated D/A output. For more details on the VIC port,

see the TMS320C64x DSP Video Port/VCXO Interpolated Control (VIC) Port Reference Guide (literature

number SPRU629).

The ethernet media access controller (EMAC) provides an efficient interface between the DM641/DM640 DSP

core processor and the network. The DM641/DM640 EMAC support both 10Base-T and 100Base-TX, or 10

Mbits/second (Mbps) and 100 Mbps in either half- or full-duplex, with hardware flow control and quality of

service (QOS) support. The DM641/DM640 EMAC makes use of a custom interface to the DSP core that

allows efficient data transmission and reception. For more details on the EMAC, see the TMS320C6000 DSP

Ethernet Media Access Controller (EMAC) / Management Data Input/Output (MDIO) Module Reference

Guide (literature number SPRU628).

The management data input/output (MDIO) module continuously polls all 32 MDIO addresses in order to

enumerate all PHY devices in the system. Once a PHY candidate has been selected by the DSP, the MDIO

module transparently monitors its link state by reading the PHY status register. Link change events are stored

in the MDIO module and can optionally interrupt the DSP, allowing the DSP to poll the link status of the device

without continuously performing costly MDIO accesses. For more details on the MDIO, see the

TMS320C6000 DSP Ethernet Media Access Controller (EMAC) / Management Data Input/Output (MDIO)

Module Reference Guide (literature number SPRU628).

The I2C0 port on the TMS320DM641/DM640 allows the DSP to easily control peripheral devices and

communicate with a host processor. In addition, the standard multichannel buffered serial port (McBSP) may

be used to communicate with serial peripheral interface (SPI) mode peripheral devices.

The DM641/DM640 has a complete set of development tools which includes: a new C compiler, an assembly

optimizer to simplify programming and scheduling, and a Windows

 debugger interface for visibility into

source code execution.

Windows is a registered trademark of the Microsoft Corporation.

TMS320DM641 датащи(PDF) 17 Page - Texas Instruments