MD3331-D64-V3 M-Systems Inc., MD3331-D64-V3 Datasheet - Page 36

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

7.
This section describes various DiskOnChip Millennium Plus registers and their functions, as listed in Table 5. This
section can be used to enable the designer to better evaluate DiskOnChip technology.
7.1
The following abbreviations and terms are used within this section:
RFU
RFU_0
RFU_1
Reset Value
7.2
All registers return 00H while in Reset mode. The Reset value written in the register description is the register value
after exiting Reset mode and entering Normal mode. Some register contents are undefined at that time (N/A).
7.3
Description:
Address (hex):
Type:
Reset Value:
36
Bit 7
Register Descriptions
Definition of Terms
Reset Values
Chip Identification (ID) Register
Reserved for future use. This bit is undefined during a read cycle and “don’t care” during a write
cycle.
Reserved for future use; when read, this bit always returns the value 0; when written, software should
ensure that this bit is always set to 0.
Reserved for future use; when read, this bit always returns the value 1; when written, software should
ensure that this bit is always set to 1.
Refers to the value immediately present after exiting from Reset mode to Normal mode.
This register is used to identify the device residing on the host platform. For DiskOnChip
Millennium Plus 32/64MB, this register always returns 40H when read. For DiskOnChip
Millennium Plus 16MB, it returns 41H.
1000
Read only
40H/41H
Bit 6
Address (Hex)
Table 5: DiskOnChip Millennium Plus Registers
Bit 5
100C
100A
100E
1000
1002
1004
1006
1008
1046
1076
Data Sheet, Rev. 1.7
Bit 4
Chip Identification (ID)
No Operation (NOP)
Test
DiskOnChip Control
Device ID Select
Configuration
Output Control
Interrupt Control
Toggle Bit
DiskOnChip Control Confirmation
40H/41H
Register Name
Bit 3
DiskOnChip Millennium Plus 16/32/64MByte
Bit 2
Bit 1
93-SR-002-03-8L
Bit 0