QV301M2 Quadravox Inc, QV301M2 Datasheet - Page 4

• Manufacturer Part Number: QV301M2
• Description: SOUND MOD PAR/SER CTRL W/22W AMP
• Manufacturer: Quadravox Inc

Specifications of QV301M2

• Module/board Type: Sound Board
• For Use With/related Products: QV301M2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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bound of a linear sequence or random selection. Upon power up or after a recording, the system
will automatically detect the number of messages and define its own maximum upper bound.
By default, the QV301m is powered from start-up until the sleep mode bit is set with a set mode
command after which the wakeup time checks the interface once every 20ms. The PWR_ pin can
be used to switch power to an external amplifier. A low-power mode can be selected with the
setlp command.
The QV430P programming cradle and QV300s2 project management software can be used to
program the QV301m. The diagrams for the QV430P and the QV300s2 software are also
available free from <www.quadravox.com>.
programmer can be used to mass produce formatted ChipCorder
Setting the addressing mode:
The QV301m offers three modes of playback addressing. The modes are selected using the two
low-order bits of the set mode command. Bit 0 selects direct or sequential addressing. In direct
addressing (bit 0 = 0), the value transferred in the command byte is used to select the phrase of
the same number. If a value exceeding the maximum number of recorded phrases is sent, the
last phrase in the memory will be played. If bit 0 is set to one, the phrase played will lie within the
bounds of zero and the number transferred in the command byte. If bit 1 of the mode value is 0,
the phrases in this range will be played in sequence, rolling back to zero after the top phrase (the
one corresponding to the command byte) has been played. If bit 1 is 1, a randomly-selected one
of the same range will be played.
The mode can be changed at any time, so system operation can combine the different
addressing options. For example, to have ten phrases triggered by specific events and a different
set of ten randomly selected by a fifth event, do the following:
“random sequence” (0f3h). Repeatedly sending a command byte of “9” will produce a random
selection of phrases 0-9.
number of the phrase to be played.
sequence” (0f1h) instead of 0f3h.
Recording messages:
The primary function of the QV301m is to manage message playback. The recording function is
intended to be used only to set up the system initially. Messages must be recorded in the order
they are to be selected, that is, from number 0 to n, and must all be recorded in the same
session. Resetting record mode places a very short file on the ChipCorder to serve as the “last”
marker. Quadravox provides the QV300S2 software and optional QV430P hardware to perform
this operation, but it is simple enough to be easily integrated into your application.
recorded to the analog-in+ pin of module. The recording level may have to be adjusted to achieve
the best overall recording quality, as explained in ISD’s documentation.
place an EOM marker in the ChipCorder.
different playback modes)
- Record the phrases in order with the ten randomly selected ones as the first ten in the list.
- To randomly select one of the bottom group, first issue a set mode command specifying
To record a new set of messages:
- issue a set mode “record” command (0f4h)
- To select one of the fixed phrases, issue a set mode command for “direct” (0f0h), the send the
- If you desire that the phrases in the first group be played in sequence, issue a set mode “linear
- send a command byte of “1” (01h) and at the same time start applying the analog signal to be
- When the analog segment is complete, send a command byte of “0” to stop the recording and
- When all phrases have been recorded, issue a set mode command of 0f0h.(or 0f1h or 0f3h for
2003
Quadravox, Inc
Quadravox, Inc
If required, the Quadravox QV401P gang
devices.
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