Scratchreg0, scratchreg1, Apbwait, Value: this is a 32-bit read/write location – Cirrus Logic EP93xx User Manual
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DS785UM1
Copyright 2007 Cirrus Logic
System Controller
EP93xx User’s Guide
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ScratchReg0, ScratchReg1
Address:
ScratchReg0 - 0x8093_0040, Read/Write
ScratchReg1 - 0x8093_0044, Read/Write
Default:
0x0000_0000
Definition:
Each of these locations provide a 32-bit read/write scratch register, that can be
used as a general purpose storage. These registers are reset to zero only on a
power-on-reset. A System Reset will have no effect.
Bit Descriptions:
Value:
This is a 32-bit read/write location.
APBWait
Address:
0x8093_0050, Read/Write
Definition:
The APBWait register controls the insertion of wait states for APB peripherals.
Bit Descriptions:
RSVD:
Reserved. Unknown During Read.
NO_WRITE_WAIT:Used in the AHB/APB bridge to not insert an AHB wait
during writes, if set. If reset, a wait state is added by
forcing HREADY = 0 during ST_WRITE. This bit resets to
0x0001.
31
30
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21
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16
Value
15
14
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9
8
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2
1
0
Value
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RSVD
15
14
13
12
11
10
9
8
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3
2
1
0
RSVD
NO_WRITE_WAIT