AnsweredAssumed Answered

Please, explain me RXFD value in OTG_FS_GRXFSIZ?

Question asked by shumel.vladimir on Oct 15, 2014
Latest reply on Oct 2, 2017 by waclawek.jan
Hello!

Sorry for possible mistakes, English - not my native language.

The RM0090 contains on page 1269:

OTG_FS Receive FIFO size register (OTG_FS_GRXFSIZ)
Reset value: 0x0000 0200

Bits 15:0 RXFD: RxFIFO depth
This value is in terms of 32-bit words.
Minimum value is 16
Maximum value is 256
The power-on reset value of this register is specified as the largest Rx data FIFO depth. 


Explain me, please, how Reset value - 0x0000 0200 (512 decimal) - is specified as the largest Rx data FIFO depth (2048 bytes), so 1.25 Kbyte of dedicated RAM (page 1240 of RM)?

It's value outside the range Minimum value is 16 Maximum value is 256, so, how understand it? Or its value is hexadecimal?

I didn't find any discussions by request "OTG_FS_GRXFSIZ", so, please, sorry, if this issue has been raised. If so, please, give me proper link.

Thank you!

With respect, Shumel Vladimir.

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