參數(shù)資料
型號: XR16L651IM-F
廠商: Exar Corporation
文件頁數(shù): 25/56頁
文件大小: 0K
描述: IC UART FIFO 32B 48TQFP
標(biāo)準(zhǔn)包裝: 250
特點(diǎn): *
通道數(shù): 1,UART
FIFO's: 32 字節(jié)
規(guī)程: 打印機(jī),RS232,RS422,RS485
電源電壓: 2.25 V ~ 5.5 V
帶并行端口:
帶自動(dòng)流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動(dòng)位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
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
á
XR16L651
REV. 1.3.0
2.25V TO 5.5V UART WITH 32-BYTE FIFO
31
LCR[7]: Baud Rate Divisors Enable
Baud rate generator divisor (DLL/DLM) enable.
Logic 0 = Data registers are selected (default).
Logic 1 = Divisor latch registers are selected if LCR ≠ 0xBF.
4.7
Modem Control Register (MCR) or General Purpose Outputs Control - Read/Write
The MCR register is used for controlling the serial/modem interface signals or general purpose inputs/outputs.
MCR[0]: DTR# Pins
The DTR# pin is a modem control output. 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.
MCR[1]: RTS# Pins
The RTS# pin is a modem control output and may be used for automatic hardware flow control enabled by
EFR bit-6. 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[2]: OP1# Output
OP1# is a general purpose output.
Logic 0 = OP1# output is at logic 1 (default).
Logic 1 = OP1# output is at logic 0
MCR[3]: OP2# or IRQn Enable during PC Mode
OP2# is a general purpose output available during the Intel or Motorola bus interface mode of operation. In the
PC bus mode, it enables the IRQn operation. See PC Mode section.
During Intel or Motorola Bus Mode Operation:
Logic 0 = OP2# output is at logic 1 (default).
Logic 1 = OP2# output is at logic 0.
During PC Mode Operation:
Logic 0 = Disable IRQn operation (default).
Logic 1 = Enable IRQn operation.
MCR[4]: Internal Loopback Enable
Logic 0 = Disable loopback mode (default).
Logic 1 = Enable local loopback mode, see loopback section and Figure 15.
MCR[5]: Active/Three-state Interrupt Output Enable
Logic 0 = Enable active or three-state interrupt output (default).
Logic 1 = Enable open source interrupt output mode. See Table 3 for detailed information.
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