參數(shù)資料
型號(hào): XR16L788IQ-F
廠商: Exar Corporation
文件頁數(shù): 32/54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
38
HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
REV. 1.2.3
4.11
SCRATCH PAD REGISTER (SPR) - Read/Write
This is a 8-bit general purpose register for the user to store temporary data. The content of this register is
preserved during sleep mode but becomes 0xFF (default) after a reset or a power off-on cycle.
4.12
FEATURE CONTROL REGISTER (FCTR) - Read/Write
This register controls the UART enhanced functions that are not available on ST16C554 or ST16C654.
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.
Table 17 below shows the 16 selectable hysteresis levels.
TABLE 16: AUTO RS485 HALF-DUPLEX DIRECTION CONTROL DELAY FROM TRANSMIT-TO-RECEIVE
MSR[7]
MSR[6]
MSR[5]
MSR[4]
DELAY IN DATA BIT(S) TIME
0
1
0
1
0
2
0
1
3
0
1
0
4
9
1
0
1
5
0
1
0
6
0
1
7
1
0
8
1
0
1
9
1
0
1
0
10
1
0
1
11
1
0
12
1
0
1
13
1
0
14
1
15
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