Artesyn MVME55006E Single Board Computer Installation and Use (July 2014) - Manual (Page 60)

RAM55006E Memory Expansion Module
MVME55006E Single Board Computer Installation and Use (6806800A37J) 60
The RAM5500 memory expansion module is connected to the host board with a 140-pin AMP
4mm Free Height plug connector. This memory expansion module draws +3.3V through this
connector.
The RAM5500 SPD uses the SPD JEDEC standard definition and is accessed at address $A2.
Refer to the following section on SROM for more details.
3.3.2 SROM
The RAM5500 memory expansion module contains a single +3.3V, 256 x 8, serial EEPROM
device (AT24C02). The serial EEPROM provides SPD storage of the module memory subsystem
configuration. The RAM5500 SPD is software addressable by a unique address.
Figure 3-1 RAM500 Block Diagram
A,
BA,
WE_L,
RAS_L,
CAS_L,
DQM
SCL
SDA
A1_SPD CLK1
CLK (0:8)
A0_SPD
CS_C_L,
CS_D_L
Bank of 9 (x8)
SDRAM
Registers
AVC16722
Registers
AVC16374
SROM
SPD
PLL
Clock
Driver
MVME5500 Mezzanine Connector