参数资料
型号: XR16V798IQ-F
厂商: Exar Corporation
文件页数: 36/56页
文件大小: 0K
描述: IC UART FIFO 64B OCTAL 100QFP
标准包装: 66
特点: *
通道数: 8
FIFO's: 64 字节
规程: RS485
电源电压: 2.25 V ~ 3.6 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
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
其它名称: 1016-1647
XR16V798IQ-F-ND
XR16V798
41
REV. 1.0.1
HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE
FCTR[4]: Infrared RX Input Logic Select
Logic 0 = Select RX input as active HIGH encoded IrDA data, normal, (default).
Logic 1 = Select RX input as active LOW encoded IrDA data, inverted.
FCTR [3:0] - Auto RTS/DTR Flow Control Hysteresis Select
These bits select the auto RTS/DTR flow control hysteresis and only valid when TX and RX Trigger Table-D is
selected (FCTR bit-6 and 7 are set to logic 1). The RTS/DTR hysteresis is referenced to the RX FIFO trigger
level. After reset, these bits are set to logic 0 selecting the next FIFO trigger level for hardware flow control.
shows the 16 selectable hysteresis levels.
4.13
Enhanced Feature Register (EFR) - Read/Write
Enhanced features are enabled or disabled using this register. Bits 3:0 provide single or dual consecutive
character software flow control selection (see Table 18). When the Xon1 and Xon2 and Xoff1 and Xoff2 modes
are selected, the double 8-bit words are concatenated into two sequential characters. Caution: note that
whenever changing the TX or RX flow control bits, always reset all bits back to logic 0 (disable) before
programming a new setting.
EFR[7]: Auto CTS Flow Control Enable
Automatic CTS or DSR Flow Control.
Logic 0 = Automatic CTS/DSR flow control is disabled (default).
Logic 1 = Enable Automatic CTS/DSR flow control. Transmission stops when CTS/DSR# pin de-asserts
(HIGH). Transmission resumes when CTS/DSR# pin is asserted (LOW). The selection for CTS# or DSR# is
through MCR bit-2.
TABLE 17: 16 SELECTABLE HYSTERESIS LEVELS WHEN TRIGGER TABLE-D IS SELECTED
FCTR BIT-3
FCTR BIT-2
FCTR BIT-1
FCTR BIT-0
RTS/DTR HYSTERESIS
(CHARACTERS)
0
1
+/- 4
0
1
0
+/- 6
0
1
+/- 8
0
1
0
+/- 8
0
1
0
1
+/- 16
0
1
0
+/- 24
0
1
+/- 32
1
0
+/- 12
1
0
1
+/- 20
1
0
+/- 28
1
+/- 36
1
0
+/- 40
1
0
1
+/- 44
1
0
1
0
+/- 48
1
0
1
+/- 52
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