LSI Logic Confidential
15-90
Serial I/O Port
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
stop bits to be transmitted per character. The receiver
checks for the first stop bit only. Details are shown in
.
UART1 Modem Control Register (UART1_MCR)
UART2 Modem Control Register (UART2_MCR)
Offset = 0xBE0110 / 0xBE0190
Read/Write
Default = 0x0000 0000
This register controls the interface with the modem, or with the data set
for a peripheral device emulating the modem. After module reset, this
register is set to no loopback, and all modem control output pins are
high.
RTS
Request To Send
25
If hardware flow control is enabled, then the
SIO_UART*_RTS pin (and this bit) acts as a function of
the receive FIFO’s fullness; the software-programmed
value is ignored. The output RTS strobe is deasserted
(pin high, bit low) if the receive FIFO has only two byte
slots “open”; the strobe is reasserted (pin low, bit high)
when it is three bytes from full.
If hardware flow control is disabled, this bit controls the
SIO_UART*_RTS (request to send) output signal:
1 = The RTS pin is low.
0 = The RTS pin is high.
31
26
25
24
16
RSVD
RTS
RSVD
15
0
RSVD
Содержание DMN-8600
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