AeroComm Corporation PKLR2400-200 ユーザーズマニュアル

AC5124-10 Specifications

11/24/03

8. Initializing the AC5124 Transceiver

Initializing the AC5124 Transceiver

Upon reset or power-up, a transceiver requires a minimum of 400ms for hardware initialization to
complete. During this time, CTS is driven logic high prohibiting the reception of any data or
commands. Once complete, CTS is driven logic low, allowing a transceiver to send or receive data
and commands, depending on the mode of operation.

8.1

8.1 TTTT

RANSPARENT

ODE

IIII

NITIALIZATION

When operating in any Transparent Mode, the initialization sequence is managed by the AeroComm
protocol. API commands are not issued and there are no acknowledgements from a transceiver on
data delivery, unless the OEM protocol has built-in acknowledgements. The IN_RANGE pin (Pin 15)
provides in range information for the Transparent Modes.

8.2

8.2 API M

API M

ODE

IIII

NITIALIZATION

After the hardware initialization has completed, a transceiver operating in API Mode is ready to send
and receive API commands as outlined in Section 5, API Command Set

Section 5, API Command Set

Section 5, API Command Set. At this point, the only

command that cannot be issued is the

Send Data

Send Data command. This command can only be issued after

the

RF Enable

RF Enable and In Range

In Range

In Range commands have been issued.

Before data communications can begin, a Client needs to be authenticated. The Client Host must
issue an

RF Enable

RF Enable command to activate the Client and receive an Acknowledge

Acknowledge

Acknowledge command from the

Client. The Server transmits a beacon containing its IEEE 802.3 address. Once the Client receives the
Server beacon, it will issue an

In Range

In Range command to the Client Host containing the IEEE 802.3 Server

address. The Client Host must receive the

In Range

In Range command from the Client before the Send Data

Send Data

command is invoked.

The AC5124 transceivers are designed to be single threaded, meaning that for every command issued,
there is a reply command that indicates the completion of the command issued. There can be no
command interleaving.