PXD20RM Datasheet, PDF (73/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

• Programmable full step state
• Programmable integration polarity
• Blanking (recirculation) state
• 16-bit integration accumulator register
• 16-bit modulus down counter with interrupt
1.5.33 Sound generator module (SGM)
The SGM features the following:
• 4-channel audio mixer
• Each channel capable of independent Tone generation or Wave playback
• Individual channel volume control (8-bit resolution)
• Tone Mode:
— Programmable Tone frequency
— Programmable amplitude envelope: attack, duration and decay
— Programmable number of tone pulses and inter-tone duration
• Wave Mode:
— One FIFO per channel working in conjunction with eDMA
— Supports standard audio sampling rates (4 kHz, 8 kHz, 11.025 kHz, 16 kHz, 22.050 kHz,
32 kHz, 44.100 kHz, 48 kHz)
— Same sample rate applies to all channels
— 8-bit, 12-bit, 16-bit input data formats
— Programmable wave duration and inter-wave duration
— Repeat mode with programmable number of wave playbacks
• SGM Output:
— 16-bit PWM channel
— Integrated I²S master interface for connection to external audio DAC
1.5.34 IEEE 1149.1 JTAG controller (JTAGC)
JTAGC features the following:
• Backward compatible to standard JTAG IEEE 1149.1-2001 test access port (TAP) interface
• Support for boundary scan testing
1.5.35 Nexus Development Interface (NDI)
The Nexus 3 module is compliant with Class 3 of the IEEE-ISTO 5001-2008 standard, with additional
Class 4 features available. The following features are implemented:
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
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