參數(shù)資料
型號(hào)： XR16V794IV-F
廠商： Exar Corporation
文件頁數(shù)： 19/53頁
文件大?。?/td> 0K
描述： IC UART FIFO 64B QUAD 64LQFP
標(biāo)準(zhǔn)包裝： 160
特點(diǎn)： *
通道數(shù)： 4，QUART
FIFO's： 64 字節(jié)
規(guī)程： RS485
電源電壓： 2.25 V ~ 3.6 V
帶自動(dòng)流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應(yīng)商設(shè)備封裝： 64-LQFP（10x10）
包裝： 托盤
XR16V794
26
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL BAUD RATE
REV. 1.0.1
3.2
UART CHANNEL CONFIGURATION REGISTERS
The first 8 registers are 16550 compatible with EXAR enhanced feature registers located on the upper 8
addresses. The 4 sets of UART configuration registers are decoded using address lines A0 to A3 as shown
below.
TABLE 11: UART CHANNEL CONFIGURATION REGISTERS.
ADDRESS
REGISTER
READ/WRITE
COMMENTS
A3 A2 A1 A0
16550 COMPATIBLE
0
0 0
RHR - Receive Holding Reg
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0
0 0
DLL - Divisor LSB
Read/Write
LCR[7] = 1
0
0 1
DLM - Divisor MSB
Read/Write
LCR[7] = 1
0
1 0
DLD - Divisor Fractional Part
Read/Write
LCR[7] = 1
0
0 1
IER - Interrupt Enable Reg
Read/Write
LCR[7] = 0
0
1 0
ISR - Interrupt Status Reg
FCR - FIFO Control Reg
Read-only
Write-only
LCR[7] = 0
0
1 1
LCR - Line Control Reg
Read/Write
0
1
0 0
MCR - Modem Control Reg
Read/Write
0
1
0 1
LSR - Line Status Reg
reserved
Read-only
Write-only
0
1
1 0
MSR - Modem Status Reg
- Auto RS485 Delay
Read-only
Write-only
0
1
1 1
SPR - Scratch Pad Reg
Read/Write
ENHANCED REGISTER
1
0
0 0
FCTR
Read/Write
1
0
0 1
EFR - Enhanced Function Reg
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
0 0
Xoff-1 - Xoff Character 1
Xchar
Write-only
Read-only
Xon,Xoff Rcvd.
Flags
1
0 1
Xoff-2 - Xoff Character 2
reserved
Write-only
Read-only
1
1 0
Xon-1 - Xon Character 1
reserved
Write-only
Read-only
1
1 1
Xon-2 - Xon Character 2
reserved
Write-only
Read-only
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XR16V798IQ-0A-EVB 功能描述:UART 接口集成電路 Supports V798 100 ld QFP,ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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