Texas Instruments TMS320 Series

DA255

DA255 is the TMS320 dervivative used in the Creative Zen Touch and possibly other Creative / Dell DJ devices. The exact specifics of this variant (which is presumably a custom variant for Creative) are not fully known, but it is known that these are ARM processors with a C55x core. The entire tag on one chip reads "TMS320 DA255GHH 4A-4AAFDEW". Unfortunately, Texas Instruments only gives the documentation out after signing a TI NDA.

• Forum post on Nomadness
• DellDJPort

DM320

DM320 is the common short name for the Texas Instruments microcontroller equipped with an ARM926EJ-S core and a TMS320vc5409 DSP.

TMS320VC5409 Data Manual

TMS320DSC24 Data Manual (similar to the TMS320DM320)

A popular CPU choice for a range of recent music/media players:

• Zen Vision M (CreativeZVMPort)
• Cowon A2, source
• The next-generation Neuros-players, source
• Archos Gmini 402(cc) - see ArchOpen
• Archos AV500
• Olympus m:robe MR500i Wiki w/ Dev info (OlympusMR500Info)
• iriver V10, Info from CeBIT 2006

DM270

The predecessor Texas Instruments DM270 (TMS320DM270 has an ARM7TDMI core and the same C5409 DSP core) is used by

• Mobinote DVX-Pod 7010
• Sony HMP-A1
• Lyra RD2780
• iriver PMP media player, PMP internals, source code
• Archos Gmini 400 (see ArchOpen)
• Archos AV4x0 (see ArchOpen)
• neoSOLCN-2210
• SCAM SV10

(some info from this ingenient presentation)

DSC25

The Archos AV3x0 and AV1x0 players use the TMS320DSC25 (ARM7TDMI core) model:

• ArchosAV100Port
• Archos AV3x0 HW overview, ArchosAv300Port

Further Reading

Wikipedia on the TMS320 chip family
TMS320 ARM/DSP bridge
TMS320 C5xx information