Sanyo EP93F 用户手册

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

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

It can achieve a high transmission speed of 7.5 Mbps. 

It can achieve a high transmission speed of 7.5 Mbps. 

Since noise can be minimized by installing 

Since noise can be minimized by installing 

this LAN in vehicles, such installation has 

this LAN in vehicles, such installation has 

very little impact on other devices.

very little impact on other devices.

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  

   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. 

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.

   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 

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

   The audio equipment control bus output withstand voltage of 18 V 
   Vehicle signal detection block input withstand voltage of 18V 

   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 

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

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. 

   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) 

CARNET

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