參數(shù)資料
型號(hào)： XR17L152
廠商： Exar Corporation
英文描述： 3.3V PCI BUS DUAL UART
中文描述： 3.3V的PCI總線雙UART
文件頁(yè)數(shù)： 26/55頁(yè)
文件大?。?/td> 318K
代理商： XR17L152
á
DISCONTINUED
XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
26
Address lines A0 to A3 select the 16 registers in each channel. The first 8 registers are 16550 compatible with
the EXAR enhanced feature registers located on next 8 addresses locations. Addresses 0x080 to 0x093
comprise the Device Configuration Registers and they reside in Channel 0’s space.
.
T
ABLE
10: UART CHANNEL CONFIGURATION REGISTERS.
A
DDRESS
R
EGISTER
R
EAD
/W
RITE
C
OMMENTS
A3 A2 A1 A0
16550 C
OMPATIBLE
0 0 0 0
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0 0 0 0
DLL - Div Latch Low
Read/Write
LCR[7] = 1
0 0 0 1
DLM - Div Latch High
Read/Write
LCR[7] = 1
0 0 0 1
IER - Interrupt Enable Register
Read/Write
LCR[7] = 0
0 0 1 0
ISR - Interrupt Status Register
FCR - FIFO Control Register
Read-only
Write-only
0 0 1 1
LCR - Line Control Register
Read/Write
0 1 0 0
MCR - Modem Control Register
Read/Write
0 1 0 1
LSR - Line Status Register
reserved
Read-only
Write-only
0 1 1 0
MSR - Modem Status Register
- Auto RS485 Delay
Read-only
Write-only
0 1 1 1
SPR - Scratch Pad Reg
Read/Write
E
NHANCED
R
EGISTER
1 0 0 0
FCTR
Read/Write
1 0 0 1
EFR - Enhanced Function Register
Read/Write
1 0 1 0
TXCNT - Transmit FIFO Level Counter
TXTRG - Transmit FIFO Trigger Level
Read-only
Write-only
1 0 1 1
RXCNT - Receive FIFO Level Counter
RXTRG - Receive FIFO Trigger Level
Read-only
Write-only
1 1 0 0
Xoff-1 - Xoff Character 1
Xchar
Write-only
Read-only
Xon,Xoff Rcvd.
Flags
1 1 0 1
Xoff-2 - Xoff Character 2
reserved
Write-only
Read-only
1 1 1 0
Xon-1 - Xon Character 1
reserved
Write-only
Read-only
1 1 1 1
Xon-2 - Xon Character 2
reserved
Write-only
Read-only
相關(guān)PDF資料
PDF描述
XR17L152CM 3.3V PCI BUS DUAL UART
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17L152CM 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS DUAL UART
XR17L152IM 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS DUAL UART
XR17L154 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS QUAD UART
XR17L154CV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm
XR17L154IV 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS QUAD UART
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