Motorola CPCI-6020 manual Srom, RAM500 Feature Summary, Features

Features RAM500 Memory Expansion Module

5.With standoffs installed in the three mounting holes on the RAM500 module, align the standoffs and the P1 connector on the module with the three holes on the J7 or J28 connector on the CPCI-6020 host board and press the two connectors together until they are firmly seated in place.

6.(Optional step) If a second RAM500 module is being used, align the top connector on the bottom RAM500 module with the bottom connector on the top RAM500 module and press the two connectors together until the connectors are seated in place.

7.Insert the three short Phillips screws through the holes at the corners of the RAM500 and screw them into the standoffs.

8.Turn the entire assembly over, and fasten the three nuts provided to the standoff posts on the bottom of the CPCI-6020 host board.

9.Reinstall the CPCI-6020 assembly in its proper card slot. Be sure the host board is well seated in the backplane connectors. Do not damage or bend connector pins.

10.Replace the chassis or system cover(s), reconnect the system to the AC or DC power source and turn the equipment power on.

6.4Features

The following table lists the features of the RAM500 memory expansion module:

Table 6-2 RAM500 Feature Summary

Feature	Description
Form Factor	Dual sided mezzanine, with screw/post attachment to host board
SROM	Single 256x8 I2C SROM for Serial Presence Detect Data
SDRAM	Double-Bit-Error detect, Single-Bit-Error correct across 72 bits
	128 MB to 512 MB mezzanine memory @ 100 MHz as a goal
Memory Expansion	Any RAM500 memory size can be attached to the host board followed by
Flexibility	any secondary RAM500 memory size for maximum memory expansion
	flexibility.

6.4.1SROM

The RAM500 memory expansion module contains a single +3.3 V, 256 x 8, Serial EEPROM device (AT24C02). The Serial EEPROM provides Serial Presence Detect (SPD) storage of the module memory subsystem configuration. The RAM500 SPD is software addressable by a unique address as follows: The first RAM500 attached to the host board has its SPD addressable at $AA. The second RAM500 attached to the host board has its SPD addressable at $AC. This dynamic address relocation of the RAM500 SPD shall be done using the bottom- side connector signal A1_SPD and A0_SPD.

CPCI-6020 CompactPCI Single Board Computer Installation and Use (6806800A51C) 119