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Command Details and Explanation –
This section will outline basic functionality and usage of each command set within
the RS232 interface protocol.
Note: Command IDs one(1) and two(2) are implemented to provide provision for
future expandability. Command IDs three (3) through nine(9) offer more flexible
control solutions and should be used for most applications.
Command ID #1: Send Single-Byte IR Code Equivalent
Command Format:
<CAh><FEh><1><Data Byte><00h><00h>
Functional Description:
This command will write the given data (<Data Byte>) to the unit’s IR data bus.
Usage:
This command can be used to effectively implement any other command, which
has a one-byte equivalent IR code. Equivalent IR codes for commands can
be found on RS-232 command listing. Note that not all commands have equivalent
IR codes.
Example:
To send the
single byte
command “
Play
”, send
<CAh><FEh><1><79h><00h><00h>
<202><254><1><121><0><0> DECIMAL Equiv.
Command ID #2: Send Three-Byte IR Code Equivalent
Command Format:
<CAh><FEh><2><Data Byte 1><Data Byte 2><Data Byte 3>
Functional Description:
This command will write the given data (<Data Byte 1><Data Byte 2><Data Byte 3>) to
the unit’s IR data bus.
Usage:
This command can be used to effectively implement any other command, which
has a three-byte equivalent IR code. Equivalent IR codes for commands can be
found on RS-232 command listing. Note that not all commands have equivalent IR codes.
Example:
To send the
three byte
command “
Repeat
”, send
<CAh><FEh><2><99h><F5h><27h>
<202><254><2><153><245><39> DECIMAL Equiv.
Command ID #3: Direct Disk Commands
Function:
These commands have a function when the unit is loaded with any Theta CD, CDV
or DVD. However, the effect of a given command may vary depending on currently
loaded media and state of unit.
Command ID #4: CDV/DVD Commands
Function:
These commands have a function when the unit is loaded with video media. However,
the effect of a given command may vary depending on currently loaded media and
state of unit.
Command ID #5: DVD Commands
Function:
These commands have an effect only when the unit is loaded with a DVD.
Their function may vary depending on the current state of the unit.
Command ID #6: LD Commands
Not Used
Function:
These commands have an effect only when the unit is loaded with a LD.
Their function may vary depending of the current state of the unit.
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