ASTRO VG-871 - LAAD4 [20 H 33 H]: Audio Data Readout (Analog)

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2.20 LAAD4 [20H 33H]: Audio data readout (Analog)
Function: This command reads the audio data of the designated program number.
When the program number is 0, it reads out the data from the buffer RAM.
When the program has any number from 1001 to 2000, the command reads
out from the fixed data. When the program number is 9999, the command
reads the data from the command work RAM.
Sequence: Type 3
Command:
STX
1 byte
02H
VG4CMD
1 byte
FDH
LAAD4
2 bytes
20H 33H
Program number
1 to 4 bytes
“0” to “2000”, “9999”
ETX
1 byte
03H
Fig. 2-20-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
Freq L (Hz)
2 to 5 bytes
“20” to “20000” = 20 Hz to 20000 Hz
* In case of VG-882
“100” to “20000” = 100 Hz to 20000 Hz
,
1 byte
2CH (Delimiter)
Freq R (Hz)
2 to 5 bytes
“20” to “20000” = 20 Hz to 20000 Hz
* In case of VG-882
“100” to “20000” = 100 Hz to 20000 Hz
,
1 byte
2CH (Delimiter)
Level L (mV)
1 to 4 bytes
“0” to “4000” = 0 mV to 4000 mV (in 50 mV
increments)
,
1 byte
2CH (Delimiter)
Level R (mV)
1 to 4 bytes
“0” to “4000” = 0 mV to 4000 mV (in 50 mV
increments)
,
1 byte
2CH (Delimiter)
Mode
1 byte
“0” = OFF, “1” = ON
,
1 byte
2CH (Delimiter)
Sweep Mode
1 byte
“0” = OFF, “1” = Frequency
,
1 byte
2CH (Delimiter)
2 or 3 bytes
“40” to “340” msec (in 20 ms increments)
Reserved
* To be left as is. To be modified later.
,
1 byte
2CH (Delimiter)
Sweep Time
1 or 2 bytes
“0” to “15”
,
1 byte
2CH (Delimiter)
Sweep Frequency Min
3 to 5 bytes
“200” to “20000” Hz (in 100 Hz increments)
,
1 byte
2CH (Delimiter)
Sweep Frequency Max
3 to 5 bytes
“200” to “20000” Hz (in 100 Hz increments)
,
1 byte
2CH (Delimiter)
3 to 5 bytes
“200” to “19800” Hz (in 100 Hz increments)
Reserved
* To be left as is. To be modified later.
ETX
1 byte
03H
Fig. 2-20-2