Artesyn Embedded Technology 6806800R89E, Assembly, Installation And Use

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SharpMedia PCIE-8120 Hardware Description
SharpMedia™ PCIE-8120 Installation and Use (6806800R89F)
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B.8.2.5 SMBus and PVT_I2C Bus
The SharpMedia PCIE-8120 card provides connectivity to the PCI Express connector SMBus.
Additionally, a private I2C bus (PVT_I2C) is available that accesses the onboard sensor devices.
Both are connected to the CPLD to allow access to the sensor information via SMBus or through
the Host system via MDIO.
The CPLD is connected as a slave device on the PCI Express SMBus.
ID PROM (Optional)
A serial EEPROM is available on the PVT_I2C bus for the purpose of storing manufacturer or user
data specific to the card. This ID PROM device is optional and may not be present on specific
variants of the card.

M24C04 Device

4 kbits density

I2C address: 0xA0
Temperature Sensors
Figure B-10 SMBus and PVT_I2C bus connection diagram
PCIe
_x
4
I2c Temp
sensor#1
I2c I/V/P
sensor
ID PROM
ADT7461
SMBus
PVT_I2C_bus
PCIe
MDIO#1
0x90 : inlet temp
0x92: outlet temp
0x88
0xA0
Temp_INT
Alert_INT
I2c Temp
sensor#2