MC1323X_1 Datasheet, PDF (15/38 Pages) Freescale Semiconductor, Inc – Low Cost SoC Remote Control Platform for the 2.4 GHz IEEE® 802.15.4 Standard

• Arbitration lost interrupt with automatic mode switching from master to slave
• Calling address identification interrupt
• START and STOP signal generation/detection
• Repeated START signal generation
• Acknowledge bit generation/detection
• Bus busy detection
• General call recognition
• 10-bit address extension
8.6 Timer/PWM (TPM) Modules
The MC1323x has four independent timer/PWM modules, each with one channel. Each TPM module is
based on a 16-bit counter and provides input capture, output compare, and pulse width modulation. Each
TPM module has one associated I/O pin for input capture or counter/PWM output.
TPM module features include:
• Each TPM may be configured for buffered, center-aligned pulse-width modulation (CPWM) on all
channels
• Module clock source is peripheral clock or reference oscillator divided-by-1024
• Clock prescaler taps for divide by 1, 2, 4, 8, 16, 32, 64, or 128
• 16-bit free-running or up/down (CPWM) count operation
• 16-bit modulus register to control counter range
• Module enable
• One interrupt per channel plus a terminal count interrupt for each TPM module
• Channel features:
— Each channel may be input capture, output compare, or buffered edge-aligned PWM
— Rising-edge, falling-edge, or any-edge input capture trigger
— Set, clear, or toggle output compare action
— Selectable polarity on PWM outputs
8.7 Carrier Modulator Timer (CMT) Module
The MC1323x carrier modulator timer module is intended as an IR LED driver for remote control “blaster”
applications. The module consists of a carrier generator, modulator, and transmitter that drives data to the
output (IRO) pin either in baseband or in FSK mode. The IRO pin drives (modulates) the IR diode directly
or through a buffer depending on the required current. The IRO pin is specified for 20mA drive.
The CMT module features include:
• Four modes of operation
— Time with independent control of high and low times
— Baseband
MC1323x Advance Information, Rev. 0.0
Freescale Semiconductor
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