1 uart register differences, 1 uart register differences -28, Flow control registers in btuart and stuart -28 – Intel PXA255 User Manual
Page 384: Section 10.5.1

10-28
Intel® PXA255 Processor Developer’s Manual
UARTs
10.5.1
UART Register Differences
The default descriptions for BTMCR, BTMSR and STMCR are modified as shown in
.
Table 10-21. Flow Control Registers in BTUART and STUART
Bit7-5
Bit4
Bit3
Bit2
Bit1
Bit0
BTMCR
reserved
LOOP
OUT2
reserved
RTS
reserved
BTMSR
reserved
CTS
reserved
reserved
reserved
DCTS
STMCR
reserved
LOOP
OUT2
reserved
reserved
reserved