LSI Logic Confidential
SIO Register Descriptions
15-93
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
DR
Data Ready
24
1 = A complete incoming character is transferred from the
Receive Shift Register into the Receive Buffer Register.
This bit is reset by reading the Receive Buffer Register.
In FIFO mode, this bit is set whenever a character is
received and transferred to the receive FIFO. It is reset
after reading all the bytes from the receive FIFO.
UART1 Modem Status Register (UART1_MSR)
UART2 Modem Status Register (UART2_MSR)
Offset = 0xBE0118 / 0xBE0198
Read/Write
Default = 0x0000 0000
CTS
Clear To Send
28
This bit reflects the state of the CTS input of the UART.
The CTS bit is the complement of the value coming into
the SIO_UART*_CTS pin.
1 = CTS pin is active low
0 = CTS pin is active high
DCTS
Delta CTS
24
1= The CTS has changed state.
0 = Cleared after the Modem Status Register has been
read.
31
29
28
27
25
24
23
16
RSVD
CTS
RSVD
DCTS
RSVD
15
0
RSVD
Содержание DMN-8600
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