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Cypress FM4 Series - Page 698

Cypress FM4 Series
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CHAPTER 12: I/O Port
698 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
[bit1] UESMCEE: UESMCEE output select bit
Selects output for external bus SDRAM MSDCKE.
bit
Description
Reading
Reads out the register value.
Writing
0
Does not produce output of user external bus MSDCKE [Initial value]
1
Produces output of user external bus MSDCKE.
[bit0] UESMCKE: UESMCKE output select bit
Selects output for external bus SDRAM MADCLK.
bit
Description
Reading
Reads out the register value.
Writing
0
Does not produce output of user external bus MADCLK [Initial value]
1
Produces output of user external bus MADCLK.
Notes:
With EPFR20.bit[8], the input/output select of external bus data[31:16] can be controlled
collectively.
Also with EPFR20.bits[24:9], the input/output select of external bus data[31:16] can be controlled
by each bit.
The settings with EPFR20.bit[8] have the priority over those with EPFR20.bit[24:9].
To control the input/output selection with the settings of EPFR20.bit[24:9], be sure to set
“EPFR20.bit[8]=0”.
This register is not initialized by deep standby transition reset.

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