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30
2
Interrupt Enable (IE): Global control all UART interrupts.
0 = interrupts disabled.
1 = interrupts enabled.
NOTE: This bit is not valid when in Loopback mode.
20
2
Preserved.
10
2
Request to Send (RTS):
Non-Autoflow mode: When not in Autoflow mode (AFE bit of MCR is clear), this bit
controls the Request-to-Send (RTS#) output pin.
0 = RTS# pin is 1
1 = RTS# pin is 0
Autoflow mode: When in Autoflow mode (AFE bit of MCR is set), auto-RTS is
enabled. RTS# behaves as follows:
• Auto-RTS disabled. Autoflow works only with auto-CTS.
• Auto-RTS enabled. Autoflow works with both auto-CTS and auto-RTS.
00
2
Reserved