Sanyo EP93F manual Carnet

CARNET

Automotive LAN

CARNET is a LAN that uses the ARCNET token passing bus method.

It can achieve a high transmission speed of 7.5 Mbps.

Since noise can be minimized by installing

this LAN in vehicles, such installation has

very little impact on other devices.	TEL	CD, VICS
		GPS
	Radio	Car navigation
		system

Features

Hub function supporting connection of up to 8 nodes

Construction of LAN with high transmission speed of 7.5 Mbps yet ultra low noise possible

Twisted pair cables can be used Easy to use due to compact size

LA2330W CARNET/transceiver Under development

A 7.5 Mbps automotive LAN can be configured by combining the LA2330W with a protocol IC for CARNET (ARCNET controller TMC20040C Series).

On-chip driver/receiver for The audio equipment control bus

On-chip driver/receiver for CAN

Includes 8 non-inverted type open-collector output comparator circuits

Features

The audio equipment control bus block, CAN block bus output withstand voltage of 18 V

Vehicle signal detection block input withstand voltage of 18 V

Each block is independent (incl. power supply and GND line), and each is provided with a standby function.

Functions

Transceiver block for CARNET

(1)Transmitter (D/A converter (3-bit), LPF (for EMI prevention), output driver)

(2)Receiver (attenuator, receiving amplifier, noise elimination LPF (for reception signal), comparator (for waveform shaping)

Driver/receiver block for The audio equipment control bus

(1)Transmitter (output driver)

(2)Receiver (receiving amplifier, hysteresis comparator (for waveform shaping) Driver/receiver block for CAN

(1)Transmitter (LPF (for EMI prevention), output driver)

(2)Receiver (attenuator, comparator)

Non-inverted type open-collector output comparator

LA2333T	The audio equipment control bus
		Under development
	transceiver + comparator

1-chip IC incorporating an The audio equipment control bus transceiver and comparator

Features

The audio equipment control bus output withstand voltage of 18 V

Vehicle signal detection block input withstand voltage of 18V

Functions

Driver/receiver block for The audio equipment control bus

(1)Transmitter (output driver)

(2)Receiver (receiving amplifier, hysteresis comparator (for waveform shaping)) Non-inverted type open collector output comparator

LA2351M Transceiver for CARNET

The LA2351M is a low-noise transceiver IC for automotive LANs.

Features

Support of either 3-bit digital or staircase signals as input signal

If a 3-bit digital signal cannot be routed as an EMI countermeasure, place an R-2R ladder in the vicinity of the protocol chip and route the signal following D/A conversion, connecting it to the LPF input.

A 5-Mbps or 7.5 Mbps automotive LAN can be constructed by combining the LA2351M with a protocol IC for automotive LAN (ARCNET controller TMC20040C Series).

On-chip adjustment LPF

Low-noise data communication is possible.

Functions

Transmitter (transmit) block

1)D/A converter (3-bit)

2)LPF (for EMI prevention)

3)Output driver

Receiver (receive) block

1)Receiving amplifier

2)Noise elimination LPF (for reception signal)

3)Comparator (for waveform shaping)

3 Car Audio 4 Car Audio