PIC17C752 MICROCHIP [Microchip Technology], PIC17C752 Datasheet - Page 282

• Manufacturer Part Number: PIC17C752
• Description: High-Performance 8-Bit CMOS EPROM Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE F-10: TXSTA1 REGISTER (ADDRESS: 15h, BANK 0)
DS30264A-page 282
bit7
bit 7:
bit 6:
bit 5:
bit 4:
bit 3-2: Unimplemented: Read as '0'
bit 1:
bit 0:
R/W - 0 R/W - 0 R/W - 0 R/W - 0
CSRC
CSRC: Clock Source Select bit
Synchronous mode:
1 = Master Mode (Clock generated internally from BRG)
0 = Slave mode (Clock from external source)
Asynchronous mode:
Don’t care
TX9: 9-bit Transmit Select bit
1 = Selects 9-bit transmission
0 = Selects 8-bit transmission
TXEN: Transmit Enable bit
1 = Transmit enabled
0 = Transmit disabled
SREN/CREN overrides TXEN in SYNC mode
SYNC: USART Mode Select bit
(Synchronous/Asynchronous)
1 = Synchronous mode
0 = Asynchronous mode
TRMT: Transmit Shift Register (TSR) Empty bit
1 = TSR empty
0 = TSR full
TX9D: 9th bit of transmit data (can be used to calculated the parity in software)
TX9
TXSTA2 REGISTER (ADDRESS: 15h, BANK 4)
TXEN
SYNC
U - 0
—
Preliminary
U - 0
—
TRMT
R - 1
R/W - x
TX9D
bit0
R = Readable bit
W = Writable bit
-n = Value at POR reset
(x = unknown)
1997 Microchip Technology Inc.