20
CVS4 Component Video Switch
2
CVS4 Component Video Switch
Enable / Disable the IR control.
Enable / Disable the IR jack.
Enable / Disable appending Checksums or CRC-8’s to responses.
If enabled, choose whether Checksums or CRC-8’s will be appended to responses.
XS
settings
Set the control bits to ‘settings’
XS +
settings
Set bits indicated in ‘settings’ to 1.
XS -
settings
Reset bits indicated in ‘settings’ to 0.
XS
settings
,1
Set the control bits to ‘settings’, save in EEPROM.
XS +
settings
,1
Set bits indicated in ‘settings’ to 1, save in EEPROM.
XS -
settings
,1
Reset bits indicated in ‘settings’ to 0, save in EEPROM.
XS ,1
Back up current settings into EEPROM.
XS ?
Query for current settings.
XS
Query for current settings.
Response String:
=XS
settings
Where ‘settings’ is a bitmapped parameter:
Decimal Value
+128 +64 +32 +16 +8 +4 +2 +1
Bit Position
7
6
5
4
3
2
1
0
Name
0 CRC CSE IRJ IRS IRE FP AS
Factory Settings:
0
0
0
1
1
1
1
0
AS - 0=Master / Slave mode. 1=Asynchronous Mode.
KB - 0=Disable Front Panel.
1=Front Panel Enabled
IRE - 0=Disable IR remote.
1=Enable IR remote.
IRS - 0=Turn on IR Sensor.
1=Turn off IR Sensor.
IRJ - 0=Turn on IR Jack.
1=Turn off IR Jack.
CSE - 0=Disable CS and CRC-8 1=Append either Checksums or CRC-8 to responses.
CRC - 0=Append Checksums,
1=Append CRC-8’s, to reponses.
0
- Reserved, always set to 0.
The 2nd parameter is a “Backup Control Settings” flag. If it is non-zero, then the current settings
will be backed up in EEPROM, and will remain unchanged through a power failure. Backing up
the “
Control Settings
” will also backup the “
Extended Control Settings
”. If the second param-
eter is not given, then it is assumed to be 0.
The IR control (IR) and the IR jack (IJ), work differently when disabled. Disabling IR control, by
setting the ‘IR’ bit to zero, keeps the CVS4 from responding to IR codes, however the front panel
sensor remains operational and any codes received can still be queried for by using the “IR ?”
command. Disabling the IR jack, by setting the ‘IJ’ bit to zero, completely disables the IR jack. IR
commands are no longer be received through the IR jack if the ‘IJ’ bit has been set to zero.
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Control Settings (HDS4.2 Version)
Note: This command exists for backwards compatibility with the HDS4.2, use the “
XS
” version of
this command in new designs.
X
settings
Set the control bits to ‘settings’
X ?
Query for current settings.
X
Query for current settings.
Response String:
=X
settings
Where ‘settings’ is a bitmapped parameter:
Decimal Value
+128 +64 +32 +16 +8 +4 +2 +1
Bit Position
7
6
5
4
3
2
1
0
Name
0
0
0
0
0
IR FP AS
Factory Settings:
0
0
0
0
0
0
0
0
AS - 0=Master / Slave mode. 1=Asynchronous Mode.
KB - 0=Front Panel Active.
1=Front Panel Disabled.
IR - 0=IR remote Active.
1=IR remote Disabled.
0
- Reserved, always set to 0.
Note: For backward compatibility with the HDS4.2, there is no space after the command in the
response string.
Extended Control Settings
In the Asynchronous mode of operation, the CVS4 will transmit state changes as they occur.
This command allows individual control over which state changes will be sent.
This CVS4 allows control over the following states:
Power State changes (On / Off condition).
Selection changes (input / output mapping changes).
Front Panel modes and intensity changes
Front Panel Button Presses.
IR codes received.
New IR codes learned.
Control Settings changes.
Each of the above states can be selectively set to asynchronously transmit their state changes,
or run in the Master / Slave mode. If asynchronous transmit has been disabled for one of the
options, then that option will revert to the Master / Slave mode.
The ‘AS’ in the
“Control Settings”
command must be set to ‘1’ to allow any Asynchronous
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CVS4 Command Reference
(Cont’d)
CVS4 Command Reference
(Cont’d)
