Datasheet

PICkit™ Serial Analyzer User’s Guide
DS51647C-page 118 © 2009 Microchip Technology Inc.
TABLE 11-39: USART CONTROL BLOCK
TABLE 11-40: BRG BAUD RATE TABLE
Byte Bit Description
Comm: USART
16 7:0 n/a
17 7:0
0 1 = clock polarity (dflt) 1 = high-low at Start bit cell, 0 = low-high
(USART-SM only, ignored otherwise)
1 1 = n/a
2 1 = Async receive disable
(USART-A only, ignored otherwise)
3 1 = n/a
4 1 = n/a
5 1 = n/a
6 1 = n/a
7 1 = n/a
18 7:0
0 1 = Event marker enable: read byte
1 1 = Event marker enable: write byte
2 1 = Event marker enable: status error
3 1 = Event marker enable: break tx
4 1 = n/a
5 1 = n/a
6 1 = n/a
7 1 = n/a
19 7:0 n/a
20 7:0 n/a
21 7:0 bit flags
0 AUX1 – default state (0 | 1)
1 AUX2 – default state (0 | 1)
2 AUX1 – direction (1=IN, 0=OUT)
3 AUX2 – direction (1=IN, 0=OUT)
4n/a
5n/a
6n/a
7n/a
22 7:0 BRG (Baud) default (LSB)
23 7:0 BRG (Baud) default (MSB)
Baud = F
OSC/(4*(BRG + 1))
BAUD BRG ACTUAL ERR
300 16666 300.0 0.00%
1200 4166 1199.9 -0.01%
4800 1041 4798.5 -0.03%
9600 520 9596.9 -0.03%
19200 259 19230.8 0.16%
28800 173 28735.6 -0.22%
57600 86 57471.3 -0.22%
115200 42 116279.1 0.94%