Management Complex: I2C Interface

I2C INTERFACE

The I2C interface consists of the MPC8548 initialization EEPROM, user (storage) NVRAM, SO-CDIMM, and the Real-time Clock (RTC). The two Atmel two-wire serial EEPROMs on the I2C interface consist of the Serial Clock (SCL) input and the Serial Data (SDA) bidirectional lines.

Table 4-5:I2C Device Addresses

I2C Device:

 

Address:

 

MPC8548 Initialization (EEPROM-2)

 

0xA0

 

 

 

User NVRAM (EEPROM-1)

 

0xA2

 

 

 

DDR2 SDRAM (SO-CDIMM)

 

0xA4

 

 

 

M41T00 RTC

 

0xD0

 

 

 

The two EEPROMs store non-volatile information such as board, monitor, and operating sys- tem configurations as well as customer specific items.

Table 4-6:MPC8548 NVRAM Memory Map

 

Address Offset

 

Window

EEPROM:

(hex):

Description:

Size (bytes)

EEPROM-1

0x1FF0-0x1FFF

Boot verify secondary area (monitor)

16

0xA2

 

 

 

0x1FE0-0x1FEF

Boot verify primary area (monitor)

16

(write

 

 

 

0x1EE0-0x1FDF

Operating system parameters (monitor)

256

protected)

 

 

 

0x0000-x1EDF

User defined

7903

 

 

 

 

 

EEPROM-2

0x0900-0x1FFF

Emerson reserved area

5887

0xA0

 

 

 

0x0800-0x08FF

Miscellaneous

256

(write

 

 

 

0x07F0-0x07FF

Power-on Self-test (POST)

16

protected)

 

 

 

0x0000-0x07EF

User defined

2032

 

 

 

 

 

Note: Both EEPROMs are write-protected.

MANAGEMENT PROCESSOR HEADER AND SERIAL PORT

JTAG/COP Interface (optional)

The management complex uses header P2 for debug purposes.

Table 4-7:Serial Debug Connector, P2

Pin:

Signal:

Description:

1

PQ_TDO

Test Data Output is the serial data output as well as test and

 

 

programming data.

 

 

 

2

no connect

—

 

 

 

10009109-01

ATCA-9305 User’s Manual

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Emerson ATCA-9305 user manual Management Complex I2C Interface, Management Processor Header and Serial Port
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ATCA-9305 specifications

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