Altera cyclone V Technical Reference page 234

5-40
hioctrl
Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by
31 30
15 14
hioctrl Fields
Bit
8
oct_cfgen_calstart
7
regrst
6
octrst
Altera Corporation
software or hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
29 28 27 26
13 12 11 10
Reserved
Name
Controls OCT calibration and OCT IO configuration
enable.
Value
0x0
0x1
Controls IO and DQS reset.
Value
0x0
0x1
Controls OCT reset.
Value
0x0
0x1
Bit Fields
25 24 23 22
Reserved
9 8 7 6
oct_ regrs octrs
cfgen t t
_
RW RW
calst
0x1 0x1
art
RW
0x0
Description
Description
Disables IO configuration (forced to a safe
value) in OCT calibration block.
Starts OCT calibration state machine and
enables IO configuration in OCT calibration
block.
Description
No reset.
Resets all IO registers and DQS registers.
Description
No reset.
Resets registers in the OCT.
21 20 19 18
5 4 3 2
dllrs slew wkpul trist
t lup ate
RW
RW 0x0 RW RW
0x1 0x0 0x0
cv_5v4
2016.10.28
17 16
1 0
busho cfg
ld
RW 0x0
RW
0x0
Access Reset
RW 0x0
RW 0x1
RW 0x1
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