Laird AC4490, User Manual

Page: 24 / 46

AC4490 User Guide
Version 4.5
Laird Connectivity Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
24
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Parameter EEPROM
Address Length
(Bytes) Range Default Description
0 = Ignore RTS
1 = Transceiver obeys RTS
bit-1: Duplex
0 = Half Duplex
1 = Full Duplex
bit-0: Auto Config
0 = Use EEPROM values
1 = Auto Configure values
Interface
Timeout 0x58 1 0x02 -
0xFF 0x04 Specifies a byte gap timeout, used in
conjunction with RF Packet Size to
determine when a packet coming over the
interface is complete (0.5 ms per
increment).
Sync Channel 0x5A 1 0x00 -
0xFF 0x01 Used to synchronize the hopping of
collocated systems to minimize
interference.
RF Packet Size 0x5B 1 0x01 -
0x80 0x80
Used in conjunction with Interface Timeout;
specifies the maximum size of an RF packet.
Note: Must be set to a minimum of 6 in
order to send the Enter AT command.
CTS On 0x5C 1 0x01 -
0xFF 0xD2 CTS will be deasserted (High) when the
transmit buffer contains at least this many
characters.
CTS On
Hysterisis
0x5D 1 0x00 -
0xFE 0xAC Once CTS has been deasserted, CTS will
be reasserted (Low) when the transmit
buffer is contains this many or less
characters.
Max Power 0x63 1 0x00 -
0x60 Set in
Production
& can vary Used to increase/decrease the output power.
Note: The transceivers are shipped at
maximum allowable power.
Modem
Mode 0x6E 1 0xE3,
0xFF 0xFF oxE3 = Enable Modem Mode
0xFF = Disable Modem Mode
Parity 0x6F 1 0xE3,
0xFF 0xFF 0xE3 = Enable Parity
0xFF = Disable Parity
Note: Enabling parity cuts throughput and
the interface buffer size in half.
Destination ID 0x70 6 0x00 -
0xFF 0xFF Specifies destination for RF packets
System ID 0x76 1 0x00 -
0xFF 0x01 Similar to network password. Radios must
have the same system ID to communicate
with each other.