DV164122 Microchip Technology, DV164122 Datasheet - Page 130

• Manufacturer Part Number: DV164122
• Description: ANALYZER SRL PICKIT W/DEMO BOARD
• Manufacturer: Microchip Technology
• Series: PICkit™r
• Type: MCUr

Specifications of DV164122

• Contents: PICkit™ Serial Analyzer, 28-pin Demo Board, USB Cable, and Software with Documentation CD
• Processor To Be Evaluated: PIC16F886
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Kit Application Type: Interface
• Application Sub Type: USB
• Silicon Family Name: PIC16F
• Kit Contents: PICkit Serial Analyzer, Demo Board, USB Cable, Software
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC16F886
• For Use With: PKSERIAL-SPI1 - BOARD DEMO PICKIT SERIAL SPIPKSERIAL-I2C1 - BOARD DEMO PICKIT SERIAL I2C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q3260228

DS51647B-page 124
cally reset and not reported to the host. If AUTOBAUD detection is enabled, the PKSA
will wait a maximum of ‘WAIT-BRK’ for the BREAK to complete at ‘C’. The duration of
WAIT-BRK must be set to accommodate the slowest BAUD rate supported (6 msec
was chosen to support 1000 BAUD +/- 50%). If the end of BREAK is not seen in that
time, the AUTOBAUD ERROR bit is set in the STATUS_BLOCK and the operation is
aborted. If the end of BREAK is seen, the AUTOBAUD mechanism is enabled and the
BAUD rate of the SYNC character is measured. At the second interrupt (RCIF (2)) at
‘E’, the operation is complete and the new/measured BAUD rate is used for subsequent
transactions. If the AUTOBAUD measurement experienced an overflow, the AUTO-
BAUD ERROR bit is set in the STATUS_BLOCK and the default BAUD rate from the
CONTROL_BLOCK is reloaded into the USART. In either case, the resultant BAUD
rate is reflected in the STATUS_BLOCK. After the BREAK, the PKSA will wait
indefinitely for the SYNC character to begin with the USART receiver disabled.
FIGURE 11-5:
The SYNC character is not actually ‘received’ by the PKSA during an AUTOBAUD
operation; therefore, it is not reflected/reported to the HOST. The EVENT MARKER
sequence would be BREAK_RX and AUTOBAUD followed by BAUD_L, BAUD_H. If
AUTOBAUD was not enabled, the EVENT MARKER sequence would be
BREAK_RX then BYTE_RX followed by 0x55.
A
WAIT-BRK
RCIF (1)
BREAK
B
WARNING
C
D
S
0 1 2 3 4 5 6 7
© 2007 Microchip Technology Inc.
RCIF (2)
SYNC
E F
P