SMART Embedded Computing MVME2502, Installation And User Manual

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134 MVME2502 Installation and Use (6806800R96L)
Programming Model
Programming Model
7.4 I
2
C Bus Device Addressing
The following table contains the I
2
C devices used for the MVME2502 and its assigned
device address.
1. This is a dual address serial EEPROM.
2. The RTM Bus address is manually changed through the S1 Switch on RTM. The
default switch configuration will set the address to 0x55. Make sure that the address is
unique to the RTM Bus address when setting the switch.
3. The address of the XMC EEPROM is configured through Geographic Address resistor
on- board.
IRQ8/ GPIO1
RTC (Real Time
Clock)
12C DS1337 INT_A
IRQ9/ GPIO2 CPLD Interrupt LBC NMI and 3 Tick Timer Interrupts
IRQ10// GPIO3 CPLD Interrupt LBC Not used
IRQ11// GPIO4 QUART_IRQ0 LBC RTB Quart Interrupt
Table 7-2 MVME2502 Interrupt List (continued)
Interrupt Line
Interrupt Usage
(Schematic)
Interface to CPU Description
Table 7-3 I
2
C Bus Device Addressing
I
2
C Bus Address Device Function Size Notes
0x50 SPD 256 x 8
0x4C ADT 7461 Temperature Sensor N/A
0x68 DS 1375 real-time clock N/A
0x54 VPD 8192 x 8 1
0x52 User configuration 65536 x 8 1
0x53 User configuration 65536 x 8 1
0x55 RTM EEPROM 8192 X 8 1, 2
0x56 XMC EEPROM N/A 3