HARDWARE
CPCI-810 User’s Manual
3-9
Revision 1.1, June 2001
The LEDs labeled “ACT1” and “ACT2” indicate network activity for the corresponding port. The
“ACT1” and “ACT2” LEDs will blink during transmit or receive activity.
3.10.3
Ethernet Port Connector
Each Ethernet port is connect to a shielded RJ45 (modular phone type) connector. The connector
conforms to the 10/100BaseTx specification. The connector exits the front panel of the CPCI-810. The
front panel has the ports (and LEDs) labeled. The pinout of each port is shown in Table 3-3. Pin one is
to the extreme left as one looks into the connector opening with the tab notch down.
Table 3-3. 100BaseTx Connector
3.11
I
2
C BUS
The CPCI-810 has three components attached to the Inter-Integrated Circuit (I2C) bus interface of the
MPC8240 processor: the SoDIMM SDRAM EEPROM and two temperature sensors. The I
2
C
addresses of the devices are shown in Table 3-4.
Table 3-4. I
2
C Device Addresses
3.11.1
SDRAM EEPROM
The EEPROM located on the SoDIMM SDRAM module contains identification and configuration
information. Initialization code should read this information on power-up and properly configure the
memory controller.
Pin
Signal
Description
1
TX+
Output
2
TX-
Output
3
RX+
Input
4
Not Used
5
Not Used
6
RX-
Input
7
Not Used
8
Not Used
Designator
Device
Function
Address
J24
SoDIMM EEPROM
Memory Configuration
1010001
U23
LM75
Temperature Sensor
1001000
U1
LM75
Temperature Sensor
1001001
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