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4 cpu performance part, Jrex plus lx software guide, 1 bus number 0 (jida) – Kontron JRexplus-LX User Manual

Page 21: 2 bus number 1 (generic), 3 busnumber 2 (jili)

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KTD-S0004-A

Page 18

JIDA32 Interface


JRexplus LX Software Guide

Bus Number

Technology

Type

Device Count

0

I2C (primary)

JIDA

1

1

SMBus

Generic

2

2

I2C

JILI

1

7.3.1

Bus Number 0 (JIDA)

This bus allows access to the JIDA EEPROM in which KONTRON specific manufacturing parameters are
stored. A damage of these parameters leads to a loss of warranty. Due to this a write cycle may only be
performed above a defined address.

Device

Address

Size

Read Access

Write Access

JIDA EEPROM

A0h

512 Bytes

Yes

No, forbidden

7.3.2

Bus Number 1 (Generic)

Through this bus several devices can be handled.

Device

Address

Size

Read Access

Write Access

GPIO Control

30h

34 Bytes

Yes

Yes

SPD EEPROM

A0h

256 Bytes

Yes

No, forbidden

7.3.3 BusNumber

2

(JILI)

The JILI EEPROM refers to the LCD/LVDS interface. It contains the panel specific timing parameters (e.g. a
DisplayID

TM

record).

Device

Address

Size

Read Access

Write Access

JILI EEPROM

A0h

512 Bytes

Yes

Yes

7.4

CPU Performance Part

This part implements power management functions. The CPU frequency and the CPU throttling can be con-
trolled.

Function

Supported

CPU throttling

No

CPU frequency

No