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PC912XDP512F0CFVR bảng dữ liệu(PDF) 788 Page - Freescale Semiconductor, Inc

tên linh kiện PC912XDP512F0CFVR
Giải thích chi tiết về linh kiện  HCS12X Microcontrollers
PDF  1348 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC912XDP512F0CFVR bảng dữ liệu(HTML) 788 Page - Freescale Semiconductor, Inc

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Chapter 21 External Bus Interface (S12XEBIV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
790
Freescale Semiconductor
21.3
Memory Map and Register Definition
This section provides a detailed description of all registers accessible in the XEBI.
21.3.1
Module Memory Map
The registers associated with the XEBI block are shown in Figure 21-2.
21.3.2
Register Descriptions
The following sub-sections provide a detailed description of each register and the individual register bits.
All control bits can be written anytime, but this may have no effect on the related function in certain
operating modes. This allows specific configurations to be set up before changing into the target operating
mode.
NOTE
Depending on the operating mode an available function may be enabled,
disabled or depend on the control register bit. Reading the register bits will
reflect the status of related function only if the current operating mode
allows user control. Please refer the individual bit descriptions.
Register
Name
Bit 7
6
5
4
3
2
1
Bit 0
EBICTL0
R
ITHRS
0
HDBE
ASIZ4
ASIZ3
ASIZ2
ASIZ1
ASIZ0
W
EBICTL1
R
EWAITE
0000
EXSTR2
EXSTR1
EXSTR0
W
= Unimplemented or Reserved
Figure 21-2. XEBI Register Summary



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