Справочник Пользователя для AeroComm Corporation 4424200

 

 

 

3/23/2006  

12 

 

4.  Configuring the LT4424 

4.1 EEPROM P

ARAMETERS

 

A Host can program various parameters that are stored in EEPROM and become active after a power-
on reset.  Table 6 – EEPROM Parameters, gives the locations and descriptions of the parameters that 
can be read or written by a Host.  Factory default values are also shown.  Do not write to any EEPROM 
addresses other than those listed below.  Do not copy a transceiver’s EEPROM data to another 
transceiver.  Doing so may cause the transceiver to malfunction. 

Table 6 – EEPROM Parameters 

Parameter 

EEPROM 

Address 

Length 

(Bytes)  Range 

Default 

Description 

Product ID 

00H 

40 

 

 

40 bytes - Product identifier string.  
Includes revision information for software 

and hardware. 

Channel 

Number 

40H 

1 

00 – 0Fh 

00h 

Refer to Table 8 

Server/Client 

Mode 

41H 

1 

01 – 02h 

02h 

01h = Server 
02h = Client 

Baud Rate Low 

42H 

1 

00 – FFh 

05h 

Low Byte of the interface baud rate. 

Baud Rate High  43H 

1 

00 – FFh 

00h 

High Byte of the interface baud rate. 

Control 0 

45H 

1 

 

00010100b 

(14h) 

Settings are: 

Bit 7 – Laird Technologies Use Only 
Bit 6 – Laird Technologies Use Only 

Bit 5 – Reserved (Set to Zero) 
Bit 4 – Laird Technologies Use Only 

Bit 3 – Packet Frame 

0 = Disable Packet Frame 
1 = Use pin 12 as Packet Frame 

Bit 2 – Laird Technologies Use Only 
Bit 1 – RF Delivery 

0 = Addressed 
1 = Broadcast 

Bit 0 – Laird Technologies Use Only 

Transmit 

Retries 

4CH 

1 

01 – FFh 

10h 

Maximum number of times a packet is 
sent out when Addressed Packets are 

selected. 

Broadcast 

Attempts 

4DH 

1 

01 – FFh 

04h 

Maximum number of times a packet is 

sent out when Broadcast Packets are 
selected.