USB97C201-MN SMSC [SMSC Corporation], USB97C201-MN Datasheet - Page 14

• Manufacturer Part Number: USB97C201-MN
• Description: USB 2.0 ATA/ ATAPI Controller
• Manufacturer: SMSC [SMSC Corporation]

6.0 FUNCTIONAL BLOCK DESCRIPTIONS
6.1 MCU
The 64K memory map is as follows from the 8051's viewpoint:
6.1.1
The 8051 has a single flat 64K Code space. External memory requires 80ns access times from Address to Data and
less than 80ns output enable access times, assuming the use of the nMEMR signal as OE on the memory.
SMSC DS – USB97C201
0x0700-0xFFFF
0x0400-0x06FF
0x0000-0x03FF
MCU MEMORY MAP: CODE SPACE
8051 ADDRESS
Fixed Memory
768 Bytes of Fixed 16k FLASH Page
OR
768 Bytes of Internal SRAM for program execution
(see bit 7 of the UTIL_CFG register for more
information)
Fixed Memory
FIGURE 1 - MCU TO EXTERNAL CODE SPACE MAP
0xFFFF
0x0700
0x0400
0x0000
8051 MCU External Code Address
Table 2 - MCU Code Memory Map
PRELIMINARY
SRAM or External
Internal 768 Byte
Space
Memory
CODE SPACE
Page 14
External Program
Memory
External Program
Memory
OR
Internal Program
SRAM
External Program
Memory
ACCESS
Rev. 03/25/2002