REV. 2.1.3 2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS 21 3.0 UART INTERNAL REGISTERS Each of the UART channel in the 2850 has its" />
參數(shù)資料
型號： XR16C2850IM-F
廠商： Exar Corporation
文件頁數(shù)： 14/51頁
文件大小： 0K
描述： IC UART FIFO 128B DUAL 48TQFP
標(biāo)準(zhǔn)包裝： 250
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 128 字節(jié)
規(guī)程： RS232，RS485
電源電壓： 2.97 V ~ 5.5 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)位檢測功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 48-TQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 托盤
其它名稱： 1016-1275
xr
XR16C2850
REV. 2.1.3
2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS
21
3.0 UART INTERNAL REGISTERS
Each of the UART channel in the 2850 has its own set of configuration registers selected by address lines A0,
A1 and A2 with CSA# or CSB# selecting the channel. The complete register set is shown on Table 7 and
.
TABLE 7: UART CHANNEL A AND B UART INTERNAL REGISTERS
A2,A1,A0 ADDRESSES
REGISTER
READ/WRITE
COMMENTS
16C550 COMPATIBLE REGISTERS
0 0 0
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0 0 0
DLL - Div Latch Low Byte
Read/Write
LCR[7] = 1, LCR
≠ 0xBF
0 0 1
DLM - Div Latch High Byte
Read/Write
0 0 0
DREV - Device Revision Code
Read-only
DLL, DLM = 0x00,
LCR[7] = 1, LCR
≠ 0xBF
0 0 1
DVID - Device Identification Code
Read-only
0 0 1
IER - Interrupt Enable Register
Read/Write
LCR[7] = 0
0 1 0
ISR - Interrupt Status Register
FCR - FIFO Control Register
Read-only
Write-only
0 1 1
LCR - Line Control Register
Read/Write
1 0 0
MCR - Modem Control Register
Read/Write
LCR[7] = 0
1 0 1
LSR - Line Status Register
Reserved
Read-only
Write-only
1 1 0
MSR - Modem Status Register
Reserved
Read-only
Write-only
1 1 1
SPR - Scratch Pad Register
Read/Write
LCR[7] = 0, FCTR[6] = 0
1 1 1
FLVL - TX/RX FIFO Level Counter Register
Read-only
LCR[7] = 0, FCTR[6] = 1
1 1 1
EMSR - Enhanced Mode Select Register
Write-only
ENHANCED REGISTERS
0 0 0
TRG - TX/RX FIFO Trigger Level Reg
FC - TX/RX FIFO Level Counter Register
Write-only
Read-only
LCR = 0xBF
0 0 1
FCTR - Feature Control Reg
Read/Write
0 1 0
EFR - Enhanced Function Reg
Read/Write
1 0 0
Xon-1 - Xon Character 1
Read/Write
1 0 1
Xon-2 - Xon Character 2
Read/Write
1 1 0
Xoff-1 - Xoff Character 1
Read/Write
1 1 1
Xoff-2 - Xoff Character 2
Read/Write
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XR16C2850IMTR-F 制造商:Exar Corporation 功能描述:XR16C2850IMTR-F
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