OPB16450UART Xilinx Corp., OPB16450UART Datasheet - Page 10

• Manufacturer Part Number: OPB16450UART
• Description: Ds433 August 18, 2004 Product Specification
• Manufacturer: Xilinx Corp.

OPB 16450 UART
Line Status Register
As shown in
Modem Status Register
As shown in
10
Table 10: Modem Control Register Bit Definitions
Table 11: Line Status Register Bit Definitions
Notes:
1.
Location
Location
Bold faced bits permanently low.
Bit
Bit
2
1
0
7
6
5
4
3
2
1
0
Table
Table
Error in RCVR
Name
Name
TEMT
THRE
11, the Line Status Register contains the current status of the receiver and transmitter.
12, the Modem Status Register contains the current state of the Modem interface.
FIFO
Out1
DTR
RTS
OE
DR
PE
FE
BI
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Access
Access
Reset Value
Reset Value
www.xilinx.com
1-800-255-7778
"0"
"0"
"0"
“0”
“0”
“1”
“1”
“0”
“0”
“0”
“0”
(1)
User Output 1.
"1" -> Drives OUT1N low.
"0" -> Drives OUT1N high.
Request To Send.
"1" -> Drives RTSN low.
"0" -> Drives RTSN high.
Data Terminal Ready.
"1" -> Drives DTRN low.
"0" -> Drives DTRN high.
Error in RCVR FIFO.
RCVR FIFO contains at least one receiver error.
Transmitter Empty.
Transmitter Holding Register Empty.
Break Interrupt.
Set when SIN is held low for an entire character time.
Framing Error.
Character missing a stop bit. Receiver resynchs with
next character, if possible.
Parity Error.
Overrun Error.
RBR not read before next character is received.
Data Ready.
Description
Description
DS433 August 18, 2004
Product Specification