MD2241-D128-V3 M-Systems Inc., MD2241-D128-V3 Datasheet - Page 31

• Manufacturer Part Number: MD2241-D128-V3
• Description: Diskonchip Dimm Plus
• Manufacturer: M-Systems Inc.

9.2
9.2.1 Typical Design
DiskOnChip DIMM Plus uses an SRAM-like interface that can easily be connected to any microprocessor bus. It
requires 13 address lines, 8 data lines and basic memory control signals (CE#, OE#, WE#), as shown in Figure 13
below. Typically, DiskOnChip DIMM Plus can be mapped to any free 8KB memory space. In a PC compatible
platform, it is usually mapped into the BIOS expansion area. If the allocated memory window is larger than 8KB, an
automatic anti-aliasing mechanism prevents the firmware from being loaded more than once during the ROM
expansion search.
Notes: 1.
31
System Interface
2. DiskOnChip DIMM Plus is an edge-sensitive device. CE#, OE# and WE# should be properly
Byte High Enable
The 0.1µF and the 10nF low-inductance high-frequency capacitors must be attached to each of the
device’s VCC and GND pins. These capacitors must be placed as close as possible to the package
leads.
terminated (according to board layout, serial parallel or both terminations) to avoid signal ringing.
Output Enable
Chip Enable
Write Enable
Reset
Address
Data
A[0:12]
D[0:15]
BHE#
WE#
OE#
CE#
RSTIN#
Figure 13: Typical System Interface
Preliminary Data Sheet, Rev. 1.2
DiskOnChip
DIMM Plus
BUSY#
IF_CFG
LOCK#
VCC
Interface Configuration
10nF
Busy
Lock
3.3V
0.1uF
3.3V
DiskOnChip DIMM Plus
10KOhm
94-SR-002-08-8L