REV. 1.0.3 3.5 UART CHANNEL CONFIGURATION REGISTERS Address lines A0 to A3 sel" />
參數(shù)資料
型號: XR17V354IB176-F
廠商: Exar Corporation
文件頁數(shù): 35/66頁
文件大?。?/td> 0K
描述: IC UART PCIE 256B QUAD 176FPBGA
產(chǎn)品培訓(xùn)模塊: PCIe UARTs
標(biāo)準(zhǔn)包裝: 160
特點: *
通道數(shù): 4,QUART
FIFO's: 256 字節(jié)
規(guī)程: RS485
電源電壓: 3.3V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 176-LFBGA
供應(yīng)商設(shè)備封裝: 176-FPBGA(13x13)
包裝: 托盤
其它名稱: 1016-1472
XR17V354IB176-F-ND
XR17V354
40
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
REV. 1.0.3
3.5
UART CHANNEL CONFIGURATION REGISTERS
Address lines A0 to A3 select the 16 registers in each channel. The first 8 registers are 16550 compatible with
EXAR enhanced feature registers located on the upper 8 addresses.
TABLE 13: UART CHANNEL CONFIGURATION REGISTERS
ADDRESS
REGISTER
READ/WRITE
COMMENTS
A3 A2 A1 A0
16550 COMPATIBLE
0 0 0 0
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0 0 0 0
DLL - Divisor LSB
Read/Write
LCR[7] = 1
0 0 0 1
DLM - Divisor MSB
Read/Write
LCR[7] = 1
0 0 1 0
DLD - Divisor Fractional
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
LCR[7] = 0
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
Read-only
0 1 1 0
MSR - Modem Status Register
- Auto RS485 Delay
Read-only
Write-only
EFR bit-4 = 1
0 1 1 1
SPR - Scratch Pad Register
Read/Write
ENHANCED REGISTER
1 0 0 0
FCTR - Feature Control Register
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
Write-only
1 1 1 0
Xon-1 - Xon Character 1
Write-only
1 1 1 1
Xon-2 - Xon Character 2
Write-only
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