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參數(shù)資料
型號(hào): XR16L788IQ-F
廠商: Exar Corporation
文件頁數(shù): 33/54頁
文件大?。?/td> 0K
描述: IC UART 64B 3.3V OCTAL 100QFP
標(biāo)準(zhǔn)包裝: 66
特點(diǎn): *
通道數(shù): 8
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 2.97 V ~ 5.5 V
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(cè)功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 100-BQFP
供應(yīng)商設(shè)備封裝: 100-QFP(14x20)
包裝: 托盤
其它名稱: 1016-1284
XR16L788
39
REV. 1.2.3
HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
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[5]: Auto RS485 Enable
Auto RS485 half duplex control enable/disable.
Logic 0 = Standard ST16C550 mode. Transmitter generates an interrupt when transmit holding register
(THR) becomes empty. Transmit Shift Register (TSR) may still be shifting data bit out.
Logic 1 = Enable Auto RS485 half duplex direction control. RTS# output changes its logic level from HIGH to
LOW when finished sending the last stop bit of the last character out of the TSR register. It changes from
LOW to HIGH when a data byte is loaded into the THR or transmit FIFO. The change to HIGH occurs prior
sending the start-bit. It also changes the transmitter interrupt from transmit holding to transmit shift register
(TSR) empty.
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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