AM6442: MMC0 DLL FRQSEL configuration

Koichiro Tashiro

Part Number: AM6442

Hi,

I have a question from my customer for below MMC0 DLL configuration.
According to Datasheet Table 7-67, FRQSEL for HS200 is 0x0.

This value 0x0 corresponds to 200MHz to 170MHz according to TRM Table 12-3723.
But value 0x7 is 225MHz to 200MHz and it also covers 200MHz.
Is there specific reason we use 0x0 instead of 0x7?

Thanks and regards,
Koichiro Tashiro

over 2 years ago

+1 peaves over 2 years ago

TI__Guru 55265 points

The values shown in the table titled "MMC0 DLL Delay Mapping for All Timing Modes" were used when design closed timing for each of the MMC0 operating modes. Therefore, it is important to use these values when using MMC0 to ensure the signals are compliant to timing parameters defined in the datasheet.

Regards,
Paul

0 Koichiro Tashiro over 2 years ago in reply to peaves

TI__Mastermind 21140 points

Hi Paul,

Thanks for your quick reply.
This item is closed.

Thanks and regards,
Koichiro Tashiro

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AM6442: MMC0 DLL FRQSEL configuration