Data sheet, Lcpu – Procom LCPU User Manual

Page 3

Data Sheet

LCPU

Linux IP Attachment

The LCPU has a modular structure and consists in the core of

a) The circuit board with the serial and the LAN interface
b) The Linux attachment (mandatory)
c) The BusCPU (soldered on)
d) The audio attachment (slide-in)
e) The compact flash card (CF card)

About a)

The circuit board has a multilayer design. The various attachments,

(b – e) are slid in from the top.

The following interfaces are accessible at the front:

- 10/100 Mbit LAN (RJ45)

- USB V1.1 type A (master)

- USB V1.1 type B (slave)

About b)

The Linux attachment regulates bus communications. It supports all

features of the Linux kernel 2.6.

Main computer data:

XScale PXA 250 with 400 MHz

64 MByte SDRAM (32 bit @ 100 MHz)

32 MByte flash memory (32 bit), expandable to

up to 2 GByte over CF card

About c)

The BusCPU is responsible for properly scheduled bus switching for the

DVS-21. Data exchange from and to DVS-21 goes over the PCM bus. A UART
interface works as link between the LCPU and BusCPU.

About d)

The audio attachment manages the scheduled control of low frequency

(LF) data received over a LAN over Linux computers to BusCPU and vice
versa.

About e)

A compact flash card (up to 2 Gbyte) to save data can be used.

The LCPU can be fitted with an additional attachment. Currently there are three
standard attachments available:

- E1 attachment, L- No. 2.860

- S0 attachment, L- No. 2.870

- UART attachment, L- No. 2.880

The LCPU set 4 is assigned the mode of operation, E1, S0 or UART in the
configuration software ICS depending on the attachment it is equipped with.
The BusCPU on attachment manages communications between the LCPU and
DVS-21.

Date:

16.03.2009 Page:

3/5 Author:

Document-No.:

DB_LCPU_ 2220_00