Artesyn MVME2502 Installation and Use (April 2015) - Manual (Page 101)

Functional Description
MVME2502 Installation and Use (6806800R96E) 101
4.13 I
2
C Devices
The MVME2502 utilizes two I2C ports provided by the board's processor. The I 2 C bus is a two-
wire, serial data (SDA) and serial clock (SCL), synchronous, multi-master bi-directional serial
bus that allows data exchange between this device and other devices such as VPD, SPD,
EEPROM, RTC, temperature sensor, RTM, XMC, and IDT clocking.
The user can configure the RTM I2C adders and should be aware to avoid address duplication.
For more information on I2C bus device addressing, see
I2C Bus Device Addressing on page 150 .
Following are the I2C bus addresses:
Table 4-3 P2020 I2C Port1 Devices
Ref
Designator
I2C Device
I2C 8-bit Base
Address
Device Type
U39 Temperature Sensor $98 ADT 7461 Temperature Sensor
U37 SPD $A0 AT24C02 (256x8)
U40 VPD EEPROM $A8 AT24C64 (8192x8)
U4 RTM $AA Reserved for RTM
U43 User EEPROM 1 $AC AT24C512 (65536x8)
U45 User EEPROM 2 $AE AT24C512 (65536x8)
U42 RTC $D0 DS 1337 real-time clock
U6 IDT Clocking Chip $DC IDT ICS9FG108
Table 4-4 P2020 I2C Port2 Devices
Ref
Designator
I2C Device
I2C 8-bit Base
Address
Device Type
XJ2 XMC1 $A4 XMC dependent
Xj1 XMC2 $A6 XMC dependent