AeroComm Corporation LX2400 Manuel D’Utilisation
THEORY OF OPERATION
09/22/00
Preliminary
Preliminary
15
3.2.6.2.3 EEPROM BYTE WRITE command
The write routine includes the write command, address, length, and data bytes. Upon receiving this
command, the LX2400S will write the data byte to the address specified but will not echo it back to the Host
until the EEPROM write cycle is complete. The write can take as long as 10ms to complete. Following the
write cycle, the LX2400S will transmit the data byte to the Host. The WR_ENA on the connector must be
pulled low to enable the write prior to issuing this command or the write will not occur. The length byte must
be set to 01H. Only single byte writes are allowed.
command, the LX2400S will write the data byte to the address specified but will not echo it back to the Host
until the EEPROM write cycle is complete. The write can take as long as 10ms to complete. Following the
write cycle, the LX2400S will transmit the data byte to the Host. The WR_ENA on the connector must be
pulled low to enable the write prior to issuing this command or the write will not occur. The length byte must
be set to 01H. Only single byte writes are allowed.
Byte 0 = 0C1H
WRITE Command
Byte 1 = 0xxH
Address (from TABLE 2)
Byte 2 = 01H
Length = 01H
Byte 3 = 0xxH
Data
NOTE: The WR_ENA pin on the connector should only be pulled low before sending an EEPROM BYTE
WRITE command and must be held low until the data byte is echoed to the Host.
WRITE command and must be held low until the data byte is echoed to the Host.
Data Rates
Various data rates, timings, and system architecture need to be considered when determining Overall System
Throughput in a RF data system. The Host controls the Serial Interface Data Rate. The LX2400S has a fixed
RF Data Rate. The Effective Data Transmission Rate is determined from both Host and LX2400S operation.
Throughput in a RF data system. The Host controls the Serial Interface Data Rate. The LX2400S has a fixed
RF Data Rate. The Effective Data Transmission Rate is determined from both Host and LX2400S operation.
3.2.7.1 Serial Interface Data Rate
The Serial Interface Data Rate is programmable by the Host. This is the rate the Host and the LX2400S
communicate over the Serial bus. Typical values range from 1200bps to 57,600bps. The only supported
mode is asynchronous – 8-bit, No Parity, 1 Start Bit, and 1 Stop Bit.
communicate over the Serial bus. Typical values range from 1200bps to 57,600bps. The only supported
mode is asynchronous – 8-bit, No Parity, 1 Start Bit, and 1 Stop Bit.
3.2.7.2 RF Data Rate
The RF Data Rate is the rate the LX2400S transmits and receives over the RF link. It is fixed at 144,000bps, 8-
bit, Parity, 1 Start Bit, and 1 Stop Bit.
bit, Parity, 1 Start Bit, and 1 Stop Bit.