Datasheet

Table Of Contents
© 2006 Microchip Technology Inc. DS70117F-page 103
dsPIC30F6011/6012/6013/6014
16.0 UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART) MODULE
This section describes the Universal Asynchronous
Receiver/Transmitter Communications module.
16.1 UART Module Overview
The key features of the UART module are:
Full-duplex, 8 or 9-bit data communication
Even, odd or no parity options (for 8-bit data)
One or two Stop bits
Fully integrated Baud Rate Generator with 16-bit
prescaler
Baud rates range from 38 bps to 1.875 Mbps at a
30 MHz instruction rate
4-word deep transmit data buffer
4-word deep receive data buffer
Parity, framing and buffer overrun error detection
Support for interrupt only on address detect
(9th bit = 1)
Separate transmit and receive interrupts
Loopback mode for diagnostic support
FIGURE 16-1: UART TRANSMITTER BLOCK DIAGRAM
Note: This data sheet summarizes features of this group
of dsPIC30F devices and is not intended to be a complete
reference source. For more information on the CPU,
peripherals, register descriptions and general device
functionality, refer to the “dsPIC30F Family Reference
Manual” (DS70046).
Write
Write
UTX8 UxTXREG Low Byte
Load TSR
Transmit Control
– Control TSR
– Control Buffer
– Generate Flags
– Generate Interrupt
Control and Status bits
UxTXIF
Data
0’ (Start)
1’ (Stop)
Parity
Parity
Generator
Transmit Shift Register (UxTSR)
16 Divider
Control
Signals
16x Baud Clock
from Baud Rate
Generator
Internal Data Bus
UTXBRK
UxTX
Note: x = 1 or 2.