xr17v258 Exar Corporation, xr17v258 Datasheet - Page 37

• Manufacturer Part Number: xr17v258
• Description: 66mhz Pci Bus Octal Uart With Power Management Support
• Manufacturer: Exar Corporation

xr
REV. 1.0.0
A3 A2 A1 A0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A
DDRESS
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0 0
0 0
0 1
1 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
T
ABLE
RHR - Receive Holding Register
THR - Transmit Holding Register
DLL - Divisor LSB
DLM - Divisor MSB
DLD - Divisor Fractional Part
IER - Interrupt Enable Register
ISR - Interrupt Status Register
FCR - FIFO Control Register
LCR - Line Control Register
MCR - Modem Control Register
LSR - Line Status Register
MSR - Modem Status Register
SPR - Scratch Pad Register
FCTR
EFR - Enhanced Function Register
TXCNT - Transmit FIFO Level Counter
TXTRG - Transmit FIFO Trigger Level
RXCNT - Receive FIFO Level Counter
RXTRG - Receive FIFO Trigger Level
Xoff-1 - Xoff Character 1
Xchar
Xoff-2 - Xoff Character 2
Xon-1 - Xon Character 1
Xon-2 - Xon Character 2
13: UART CHANNEL CONFIGURATION REGISTERS.
- Auto RS485 Delay
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
R
EGISTER
E
16550 C
NHANCED
37
OMPATIBLE
R
EGISTER
R
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read-only
Write-only
Read-only
Write-only
Read-only
Read-only
Write-only
Read-only
Write-only
Read-only
Write-only
Write-only
Read-only
Write-only
Write-only
Write-only
EAD
/W
RITE
Xon,Xoff Rcvd.
C
LCR[7] = 0
LCR[7] = 1
LCR[7] = 1
LCR[7] = 1
LCR[7] = 0
LCR[7] = 0
OMMENTS
Flags
XR17V258