User's Manual

AC4490 Specifications
AC4490 SpecificationsAC4490 Specifications
AC4490 Specifications
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4.2.1
4.2.14.2.1
4.2.1 EEPROM Byte Read
EEPROM Byte ReadEEPROM Byte Read
EEPROM Byte Read
Upon receiving this command, a transceiver will transmit the desired data from the address requested
by the Host.
Host Command:
Host Command:Host Command:
Host Command:
Byte 1 = C0h
Byte 2 = Address
Byte 3 = Length (01…FFh = 1…255 bytes; 00h = 256 bytes)
Transceiver Response:
Transceiver Response:Transceiver Response:
Transceiver Response:
Byte 1 = C0h
Byte 2 = Address
Byte 3 = Length
Byte 4…n = Data at requested address(s)
4.2.2
4.2.24.2.2
4.2.2 EEPROM Byte Write
EEPROM Byte WriteEEPROM Byte Write
EEPROM Byte Write
Upon receiving this command, a transceiver 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, a transceiver will transmit the data byte to the Host.
Multiple byte EEPROM writes are allowed up to a length of 128 bytes. An EEPROM boundary exists
between addresses 7Fh and 80h. No single EEPROM write command shall write to addresses on
both sides of that EEPROM boundary.
Host Command:
Host Command:Host Command:
Host Command:
Byte 1 = C1h
Byte 2 = Address
Byte 3 = Length (01 – 80h)
Byte 4…n = Data to store at Address
Transceiver Response:
Transceiver Response:Transceiver Response:
Transceiver Response:
Byte 1 = C1h
Byte 2 = Address
Byte 3 = Length (01 – 80h)
Byte 4 = Last data byte written by this command
4.2.3
4.2.34.2.3
4.2.3 EEPROM Exit Configuration Command
EEPROM Exit Configuration CommandEEPROM Exit Configuration Command
EEPROM Exit Configuration Command
The OEM Host can cause the transceiver to exit command mode by issuing the Exit Configuration
Command mode command to the transceiver. However, the transceiver will not reflect any of the
However, the transceiver will not reflect any of theHowever, the transceiver will not reflect any of the
However, the transceiver will not reflect any of the
changes programmed into the EEPROM until the transceiver is reset.
changes programmed into the EEPROM until the transceiver is reset.changes programmed into the EEPROM until the transceiver is reset.
changes programmed into the EEPROM until the transceiver is reset.
Host Command:
Host Command:Host Command:
Host Command:
Byte 1 = 56h
Transceiver Response:
Transceiver Response:Transceiver Response:
Transceiver Response:
Byte 1 = 56h