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參數(shù)資料
| 型號： | XR16V794IV-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 36/53頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO 64B QUAD 64LQFP |
| 標準包裝： | 160 |
| 特點： | * |
| 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 |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 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 |
| 供應商設備封裝： | 64-LQFP（10x10） |
| 包裝： | 托盤 |
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XR16V794
41
REV. 1.0.1
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL BAUD RATE
4.14
TXCNT[7:0]: Transmit FIFO Level Counter - Read Only
Transmit FIFO level byte count from 0x00 (zero) to 0x40 (64). This 8-bit register gives an indication of the
number of characters in the transmit FIFO. The FIFO level Byte count register is read only. The user can take
advantage of the FIFO level byte counter for faster data loading to the transmit FIFO, which reduces CPU
bandwidth requirements.
4.15
TXTRG [7:0]: Transmit FIFO Trigger Level - Write Only
An 8-bit value written to this register sets the TX FIFO trigger level from 0x00 (zero) to 0x40 (64). The TX FIFO
trigger level generates an interrupt whenever the data level in the transmit FIFO falls below this preset trigger
level.
4.16
RXCNT[7:0]: Receive FIFO Level Counter - Read Only
Receive FIFO level byte count from 0x00 (zero) to 0x40 (64). It gives an indication of the number of characters
in the receive FIFO. The FIFO level byte count register is read only. The user can take advantage of the FIFO
level byte counter for faster data unloading from the receiver FIFO, which reduces CPU bandwidth
requirements.
4.17
RXTRG[7:0]: Receive FIFO Trigger Level - Write Only
An 8-bit value written to this register, sets the RX FIFO trigger level from 0x00 (zero) to 0x40 (64). The RX
FIFO trigger level generates an interrupt whenever the receive FIFO level rises to this preset trigger level.
4.18
XOFF1, XOFF2, XON1 AND XON2 REGISTERS, WRITE ONLY
These registers are used to program the Xoff1, Xoff2, Xon1 and Xon2 control characters respectively.
4.19
XCHAR REGISTER, READ ONLY
This register gives the status of the last sent control character (xon or xoff) and the last received control
character (xon or xoff). This register will be reset to 0x00 if, at anytime, the Software Flow Control is disabled.
XCHAR [7:4] : Reserved
XCHAR [3]: Transmit Xon Indicator
If the last transmitted control character was a xon character or characters (xon1, xon2), this bit will be set to a
logic 1. This bit will clear after the read.
XCHAR [2]: Transmit Xoff Indicator
If the last transmitted control character was a xoff character or characters (xoff1, xoff2), this bit will be set to a
logic 1. This bit will clear after the read.
XCHAR [1]: Xon Detect Indicator
If the last received control character was a xon character or characters (xon1, xon2), this bit will be set to a
logic 1. This bit will clear after the read.
XCHAR [0]: Xoff Detect Indicator
If the last received control character was a xoff character or characters (xoff1, xoff2), this bit will be set to a
logic 1. This bit will clear after the read.
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相關代理商/技術參數(shù) |
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| XR16V798 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL |
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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 |
| XR16V798IQ-0B-EVB | 功能描述:UART 接口集成電路 Supports V798 100 ld QFP,PCI 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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