Artesyn MVME51005E SBC Installation and Use (July 2014) - Manual (Page 83)

RAM500 Memory Expansion Module
MVME51005E Single Board Computer Installation and Use (6806800A38D) 85
*Common GND pins mate to GIGA assemblies with ground plates.
5.6 RAM500 Programming Issues
The RAM500 contains no user programmable registers, other than the Serial Presence Detect
(SPD) Data.
5.6.1 Serial Presence Detect (SPD) Data
This register is partially described for the RAM500 within the MVME5100 Single Board
Computer Programmer’s Reference Guide. The register is accessed through the I2C interface
of the Hawk ASIC on the host board (MVME5100). The RAM500 SPD is software addressable by
a unique address as follows: The first RAM500 attached to the host board has has an SPD
address of $AA. The second RAM500 attached to the top of the first RAM500 has an SPD
address of $AC.
117 WE_L RAS_L 118
119 GND* GND* 120
121 CAS_L +3.3V 122
123 +3.3V DQMB1 124
125 SCL 126
127 SDA 128
129 A1_SPD MEZZ2_L 130
131 GND 132
133 GND SDRAMCLK
3 134
135 +3.3V 136
137 SDRAMCLK
4 138
139 GND* GND* 140
Table 5-3 RAM500 Bottom Side Connector (P1)Pin Assignments