66AK2G02: CLKOUT description difference between TRM and CTT.

Satoshi TOMINAGA

Part Number: 66AK2G02

Hi,

I'm confusing the description difference between Technical Reference Manual and Clock Tree Tool of K2G0x.
I'm planning to use CLKOUT as the source of 50 MHz or 25 MHz.

In 66AK2G0x SR1.0 Clock Tree Tool, Model Version: 1.0.1 View Version: 1.0.1 Tool Version: 1.0.0.1,
- RMII_CLKOUTPin is exist, just CLKOUTPin is not exist.
- The pin is connected to NSS_RGMII_MHZ_5_CLK (Divide Factor: 200)

In Technical Reference Manual (spruhy8e.pdf)
- Figure 11-834. EMAC Integration describes CLKOUT pin
- The pin is connected to RGMII_MHZ_50_CLK (Divide Factor: 20)

Confirmation:
1. RMII_CLKOUTPin in Clock Tree Tool and CLKOUT in Technical Reference Manual are the same ?
2. Which divide factor is correct ? (I think 20, because 50 MHz is required for RMII_REF_CLK)
3. In TI PinMux Tool, SYSTEM -> CLKOUT is H23. Can the above signals be accessed via H23 ?

Regards,
Tommy

over 8 years ago

0 Yordan Kovachev over 8 years ago

TI__Guru**** 161600 points

Hi Tommy,

In case of misalignment between TRM & CTT, you should always consider that the TRM is correct. CTT is a TRM complementary tool & it is updated in accordance to the document, so the technical reference manual is the most up-to-date source of information.

To answer your question:
1. They should be the same.
2. Divide factor is 20.
3. See the data manual. Yes, you can mux CLKOUT on H23.

Best Regards,
Yordan

0 Satoshi TOMINAGA over 8 years ago in reply to Yordan Kovachev

Intellectual 850 points

Hi Yordan,

Thank you for your response.
I understand the specification and the most reliable information.

Regards,
Tommy

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66AK2G02: CLKOUT description difference between TRM and CTT.