where is the CLKMD "pin"

Okayama Gou

Intellectual 930 points

Other Parts Discussed in Thread: TMS320VC5507, TMS320VC5509A

Hello,

Could you please let me know where is the CLKMD "pin"?

Device: TMS320VC5507/VC5509A
I evaluate TMS320VC5507 and VC5509A, depend on needed memory size.

Following descriptions are confused me...:

1. In TMS320C55x DSP Peripheral Overview, spru317k.pdf, says in page10,
3 Clock Generator
This chapter describes the clock generator that is in TMS320VC5509, TMS320VC5509A, and TMS320VC5510 DSPs.

2. In TMS320C55x DSP Peripheral Overview, spru317k.pdf, says in page15,
3.7.1 Clock Generator During Reset
- The output clock frequency is determined by the level of the signal on the CLKMD input pin:

3. There is NO CLKMD PIN in TMS320VC5509A Fixed-Point Digital Signal Processor Data Manual, sprs205k.pdf.

Thank you and Best regards,
Okayama

over 13 years ago

0 Steve Tsang over 13 years ago

TI__Mastermind 23785 points

CLKMD is not an I/O pin on VC5509A. It is a register name accessible via word address 0x1C00. Please refer to VC5509A data manual, table 3-26.

Regards.

0 Okayama Gou over 13 years ago in reply to Steve Tsang

Intellectual 930 points

Steve,

Thank you for your quick reply.

Therefore, the spru317k.pdf, TMS320C55x DSP Peripheral Overview, is NOT suitable for VC5509A, right?
Because I mentioned, following are discribed:

- In TMS320C55x DSP Peripheral Overview, spru317k.pdf, says in page15,
3.7.1 Clock Generator During Reset
- The output clock frequency is determined by the level of the signal on the CLKMD input pin:

Regards,
Okayama

0 Steve Tsang over 13 years ago in reply to Okayama Gou

TI__Mastermind 23785 points

Yes. The CLKMD is clearly stated as "The clock generator has a clock mode register, CLKMD (see Section 3.8)" since Chapter 3.1 all over this document.

Regards.

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where is the CLKMD "pin"