參數(shù)資料
型號: USB97C202-MN-02
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 總線控制器
英文描述: ATA/ATAPI CONTROLLER
中文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP100
封裝: 12 X 12 MM, 1.40 MM HEIGHT, STQFP-100
文件頁數(shù): 15/59頁
文件大小: 385K
代理商: USB97C202-MN-02
SMSC DS – USB97C201
Page 15
Rev. 03/25/2002
PRELIMINARY
6.1.2
MCU MEMORY MAP: XDATA SPACE
Table 3 - MCU XData Memory Map
DATA SPACE
External Memory or I/O Devices
8051 ADDRESS
0x3F30-0xFFFF
ACCESS
(IOR or IOW
active)
DO NOT ACCESS
External
(IOR or IOW
active)
External
(IOR or IOW
active)
External
(IOR or IOW
active)
External
(IOR or IOW
active)
External
(IOR or IOW
active)
DO NOT ACCESS
External
(IOR or IOW
active)
Internal
External
(IOR or IOW
active)(see Note 1)
0x3F00-0x3F2F
0x33F7-0X3EFF
Internal Test Registers (reserved access)
External Memory or I/O Devices
033F6
External ATA Interface I/O
0x31F8-0x33F5
External Memory or I/O Devices
0x31F0-0x31F7
External ATA Interface I/O
0x30F4-0x31EF
External Memory or I/O Devices
0X30F0-0X30F3
0X0700-0X30EF
Internal Test Registers (reserved access)
External Memory or I/O Devices
0x0400-0x06FF
0x0000-0x03FF
768 Byte SRAM
(see Note 1)
Note 1:
This XDATA space is accessed using MOVX instructions. A region of 8051 Special Function Registers
(SFR) is also accessible at 0x0100 to 0x01FF addresses using the MOV instructions. In addition to the
normal 8051 SFRs, there are also numerous Runtime Registers in this SFR space. These Runtime
Registers are external to the 8051, but internal to the USB97C201.
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