参数资料
| 型号： | XR16M698IQ100-F |
| 厂商： | Exar Corporation |
| 文件页数： | 35/58页 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO 32B OCTAL 100QFP |
| 标准包装： | 66 |
| 特点： | * |
| 通道数： | 8 |
| FIFO's： | 32 字节 |
| 规程： | RS485 |
| 电源电压： | 1.62 V ~ 3.63 V |
| 带自动流量控制功能： | 是 |
| 带IrDA 编码器/解码器： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-BQFP |
| 供应商设备封装： | 100-QFP（14x20） |
| 包装： | 托盘 |
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XR16M698
40
1.62V TO 3.63V HIGH PERFORMANCE OCTAL UART WITH 32-BYTE FIFO
REV. 1.0.0
MCR[3]: Send Char Immediate (OP2 in Local Loopback Mode)
This bit is used to transmit a character immediately irrespective of the bytes currently in the transmit FIFO. The
data byte must be loaded into the transmit holding register (THR) immediately following the write to this bit (to
set it to a ’1’). In other words, no other register must be accessed between setting this bit and writing to the
THR. The loaded byte will be transmitted ahead of all the bytes in the TX FIFO, immediately after the character
currently being shifted out of the transmit shift register is sent out. The existing line parameters (parity, stop
bits) will be used when composing the character. This bit is self clearing, therefore, must be set before sending
a custom characer each time. Please note that the Transmitter must be enabled for this function (MSR[3] = 0).
Also, if software flow control is enabled, the software flow control characters (Xon, Xoff) have higher priority
and will get shifted out before the custom byte is transmitted.
Logic 0 = Send Char Immediate disabled (default).
Logic 1 = Send Char Immediate enabled.
In Local Loopback Mode (MCR[4] = 1), this bit acts as the legacy OP2 output and controls the CD bit in the
MSR register as shown in Figure 11. Please make sure that this bit is a ’0’ when exiting the Local Loopback
Mode.
MCR[2]: DTR# or RTS# for Auto Flow Control (OP1 in Local Loopback Mode)
DTR# or RTS# auto hardware flow control select. This bit is in effect only when auto RTS/DTR is enabled by
EFR bit-6. DTR# selection is associated with DSR# and RTS# is with CTS#.
Logic 0 = Uses RTS# and CTS# pins for auto hardware flow control.
Logic 1 = Uses DTR# and DSR# pins for auto hardware flow control.
In Local Loopback mode (MCR[4] = 1), this bit acts as the legacy OP1 output and controls the RI bit in the MSR
register, as shown in Figure 11.
MCR[1]: RTS# Output
The RTS# pin may be used for automatic hardware flow control by enabled by EFR bit-6 and MCR bit-2=0. If
the modem interface is not used, this output may be used for general purpose.
Logic 0 = Force RTS# output to a logic 1 (default).
Logic 1 = Force RTS# output to a logic 0.
MCR[0]: DTR# Output
The DTR# pin may be used for automatic hardware flow control enabled by EFR bit-6 and MCR bit-2=1. If the
modem interface is not used, this output may be used for general purpose.
Logic 0 = Force DTR# output to a logic 1 (default).
Logic 1 = Force DTR# output to a logic 0.
4.8
Line Status Register (LSR) - Read Only
This register provides the status of data transfers between the UART and the host. If IER bit-2 is set to a logic
1, an LSR interrupt will be generated immediately when any character in the RX FIFO has an error (parity,
framing, overrun, break).
LSR[7]: Receive FIFO Data Error Flag
Logic 0 = No FIFO error (default).
Logic 1 = An indicator for the sum of all error bits in the RX FIFO. At least one parity error, framing error or
break indication is in the FIFO data. This bit clears when there are no more errors in the FIFO.
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相关代理商/技术参数 |
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| XR16M698IQ100TR-F | 制造商:Exar Corporation 功能描述:UART 8-CH 32Byte FIFO 1.8V/2.5V/3.3V 100-Pin PQFP T/R 制造商:Exar Corporation 功能描述:XR16M698IQ100TR-F |
| XR16M752 | 制造商:EXAR 制造商全称:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO |
| XR16M752_09 | 制造商:EXAR 制造商全称:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO |
| XR16M752IL-0B-EB | 功能描述:UART 接口集成电路 Supports 16M752 32L QFN, PCI Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR16M752IL32 | 制造商:EXAR 制造商全称:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO |
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