EBC2
Functional Description
ID 29022, Rev. 01
© 2005 Kontron Modular Computers GmbH
Page 2 - 15
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.02.VC.050120/135423
P R E L I M I N A R Y
2.3.1.6
I2C Interface
The EBC2 E²Brain™ module provides one I2C serial interface for supporting direct interfacing
to the EBC2 carrier board devices. This interface is two signals wide and fully supports the I2C
specification.
The following table provides a listing of the I2C interface signals and a brief description.
2.3.1.7
LPC Interface
One Low Pin Count (LPC) interface for supporting simple IOs, simple static memory devices,
and IO controllers is available to the EBC2.
The controller is completely integrated in the E²Brain™ module and offers an 8-bit data access
port to devices which use LPC IO or memory access protocols. I/O and memory area are
selected using different address spaces.
The I/O address space is 64 kByte in size, whereas the memory area offers 16 MByte address
space. For respective address mapping, refer to the corresponding E²Brain™module docu-
mentation.
In addition, a serial IRQ controller is also implemented in the E²Brain™ module, controlling and
collecting the serial LPC IRQs and converting and processing them to IRQs for the CPU. DMA,
however, is not supported by this interface.
The following table provides a listing of the LPC interface signals and a brief description.
Table 2-7: I2C Interface Signal Description
SIGNAL
DESCRIPTION
SCL1
Serial Clock line, channel 1
SDA1
Serial Data line, channel 1
Table 2-8: LPC Interface Signal Description
SIGNAL
DESCRIPTION
LAD[0:3]
Multiplexed Command, Address, and Data lines
LFRAME#
Indicates start of a new cycle, termination of broken cycle
LPCCLK
33 MHz clock
SERIRQ
Serialized IRQ, optional for peripherals that need interrupt
