CYW20732A0
1.1.6 Test Mode Support
The CYW20732 fully supports Bluetooth Test mode, as described in the Bluetooth low energy specification.
1.2 Infrared Modulator
The CYW20732 includes hardware support for infrared TX. The hardware can transmit both modulated and un-modulated waveforms.
For modulated waveforms, hardware inserts the desired carrier frequency into all IR transmissions. IR TX can be sourced from
firmware-supplied descriptors, a programmable bit, or the peripheral UART transmitter.
If descriptors are used, they include IR on/off state and the duration between 1 and 32,767 µsec. The CYW20732 IR TX firmware
driver inserts this information in a hardware FIFO and makes sure that all descriptors are played out without a glitch due to under run
(see Figure 2 on page 5).
Figure 2. Infrared TX
1.3 Infrared Learning
The CYW20732 includes hardware support for infrared learning. The hardware can detect both modulated and unmodulated signals.
For modulated signals, the CYW20732 can detect carrier frequencies between 10 kHz– 500 kHz and the duration that the signal is
present or absent. The CYW20732 firmware driver supports further analysis and compression of learned signal. The learned signal
can then be played back through the CYW20732 IR TX subsystem (see Figure 3).
Figure 3. Infrared RX
Document Number: 002-14837 Rev. *L
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