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REV. 2.3.1 2.97V TO 5.5V UART WITH 128-BYTE FIFO 31 FCR[2]: TX FIFO Reset This bit is only active when FCR bit-0 is a ‘1’.

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參數(shù)資料

XR16C850

REV. 2.3.1

2.97V TO 5.5V UART WITH 128-BYTE FIFO

FCR[2]: TX FIFO Reset

This bit is only active when FCR bit-0 is a ‘1’.

Logic 0 = No transmit FIFO reset (default).

Logic 1 = Reset the transmit FIFO pointers and FIFO level counter logic (the transmit shift register is not

cleared or altered). This bit will return to a logic 0 after resetting the FIFO.

FCR[3]: DMA Mode Select

Controls the behavior of the TXRDY# and RXRDY# pins. See DMA operation section for details.

Logic 0 = Normal Operation (default).

Logic 1 = DMA Mode.

FCR[5:4]: Transmit FIFO Trigger Select

(logic 0 = default, TX trigger level = 1)

These 2 bits set the trigger level for the transmit FIFO. The UART will issue a transmit interrupt when the

number of characters in the FIFO falls below the selected trigger level, or when it gets empty in case that the

FIFO did not get filled over the trigger level on last re-load. Table 10 below shows the selections. EFR bit-4

must be set to ‘1’ before these bits can be accessed.

FCR[7:6]: Receive FIFO Trigger Select

(logic 0 = default, RX trigger level =1)

The FCTR Bits 5-4 are associated with these 2 bits. These 2 bits are used to set the trigger level for the receive

FIFO. The UART will issue a receive interrupt when the number of the characters in the FIFO crosses the

trigger level. Table 10 shows the complete selections.

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
XR16C850IMTR-F	功能描述:UART 接口集成電路 UART W/128 BYTE FIFO 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
XR16C850IP	制造商:未知廠家制造商全稱:未知廠家功能描述:UART\|CMOS\|DIP\|40PIN\|PLASTIC
XR16C850IQ	制造商:未知廠家制造商全稱:未知廠家功能描述:UART\|CMOS\|QFP\|52PIN\|PLASTIC
XR16C854	制造商:EXAR 制造商全稱:EXAR 功能描述:并轉(zhuǎn)串4串口擴(kuò)展芯片
XR16C854CJ	制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:

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