PXD20 Datasheet, PDF (19/130 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

— Data buffers with 4-byte receive, 4-byte transmit
— Configurable word length (8-bit or 9-bit words)
— Error detection and flagging
– Parity, noise and framing errors
— Interrupt driven operation with 4 interrupts sources
— Separate transmitter and receiver CPU interrupt sources
— 16-bit programmable baud-rate modulus counter and 16-bit fractional
— 2 receiver wake-up methods
• LIN features:
— Autonomous LIN frame handling
— Message buffer to store identifier and up to eight data bytes
— Supports message length of up to 64 bytes
— Detection and flagging of LIN errors
— Sync field; Delimiter; ID parity; Bit, Framing; Checksum and Timeout errors
— Classic or extended checksum calculation
— Configurable Break duration of up to 36-bit times
— Programmable Baud rate prescalers (13-bit mantissa, 4-bit fractional)
— Diagnostic features
– Loop back
– Self Test
– LIN bus stuck dominant detection
— Interrupt driven operation with 16 interrupt sources
— LIN slave mode features
– Autonomous LIN header handling
– Autonomous LIN response handling
– Discarding of irrelevant LIN responses using up to 16 ID filters
1.4.25 Inter-Integrated Circuit (I²C) controller modules
The PXD20 includes four I²C modules. Each module features the following:
• Two-wire bi-directional serial bus for on-board communications
• Compatibility with I²C bus standard
• Multi-master operation
• Software-programmable for one of 256 different serial clock frequencies
• Software-selectable acknowledge bit
• Interrupt-driven, byte-by-byte data transfer
• 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
Freescale Semiconductor
PXD20 Microcontroller Data Sheet, Rev. 2
Preliminary—Subject to Change Without Notice
Overview
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