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ELANSC520 Datasheet(PDF) 128 Page - Advanced Micro Devices

Part # ELANSC520
Description  Microcontroller
PDF  440 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

ELANSC520 Datasheet(HTML) 128 Page - Advanced Micro Devices

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General-Purpose Bus Controller Registers
10-12
Élan™SC520 Microcontroller Register Set Manual
GP Write Pulse Width (GPWRW)
Memory-Mapped
MMCR Offset C0Dh
Register Description
This register is used to program the pulse width for the write strobes (GPIOWR and GPMEMWR).
Bit Definitions
Programming Notes
Figure 10-1 on page 10-7 shows the relationships between the various adjustable GP bus timing parameters.
7
6
5
4
3
2
1
0
Bit
GP_WR_WIDTH[7–0]
Reset
00000000
R/W
R/W
Bit
Name
Function
7
–0
GP_WR_
WIDTH[7–0]
Signal Width for (GPIOWR and GPMEMWR)
This field adjusts the signal pulse width (time) of the GP bus write strobes.
The resolution of this parameter is one internal (33-MHz) clock period.
The width used is (GP_WR_WIDTH + 1) internal clock periods; i.e., if GP_WR_WIDTH is 0,
the pulse is one clock period wide.



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