MD3331-D64-V3 M-Systems Inc., MD3331-D64-V3 Datasheet - Page 52

• Manufacturer Part Number: MD3331-D64-V3
• Description: Diskonchip Millennium Plus
• Manufacturer: M-Systems Inc.

9.7
When cascading DiskOnChip Millennium Plus devices, the Programmable Boot Block size is enlarged with 1KB for
each additional device in the configuration. When four devices are connected in cascaded configuration, a boot
block size of 4KB is available.
The MAX_ID field of the Configuration register can be programmed with the maximum ID value used to enable
access to the boot block of each device in a separate address space.
Initially at power-up, only device 0 responds to reads from the boot block address space with its 1KB of data aliased
at addresses 0K, 1K, 6K and 7K. Figure 22 shows the memory map when four devices are connected in a cascaded
configuration, and the location of each IPL.
52
Memory Map in Cascaded Configuration
0000H
0800H
1000H
1800H
Figure 22: Memory Map in Cascaded Configuration
Reset Mode
IPL 0
IPL 0
IPL 0
IPL 0
00H
00H
Data Sheet, Rev. 1.7
Programmable
Programmable
Section 0
Section 1
Section 2
Section 3
Block
Block
Boot
Boot
Normal Mode
(after setting
Flash Area
Registers
MAX_ID)
Window
Control
IPL 0
IPL 1
IPL 2
IPL 3
DiskOnChip Millennium Plus 16/32/64MByte
93-SR-002-03-8L