FIGURE 19. RECEIVE R
參數資料
型號: XR19L402IL48-F
廠商: Exar Corporation
文件頁數: 41/49頁
文件大?。?/td> 0K
描述: IC UART/TXRX RS485 48QFN
標準包裝: 260
特點: *
通道數: 2,DUART
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 3.3V,5V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調制解調器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 48-VFQFN 裸露焊盤
供應商設備封裝: 48-QFN-EP(7x7)
包裝: 托盤
FIGURE 19. RECEIVE READY INTERRUPT TIMING [NON-FIFO MODE]
RX
INT
D0:D7
Start
Bit
D0:D7
Stop
Bit
D0:D7
1 Byte
in RHR
1 Byte
in RHR
1 Byte
in RHR
RXNFM
T
SSR
T
SSR
T
SSR
IOR#
T
RR
T
RR
T
RR
(Reading data
out of RHR)
FIGURE 20. TRANSMIT READY INTERRUPT TIMING [NON-FIFO MODE]
TX
INT*
D0:D7
Start
Bit
D0:D7
Stop
Bit
D0:D7
TXNonFIFO
T
WRI
T
WRI
T
WRI
T
SRT
T
SRT
T
SRT
*INT is cleared when the ISR is read or when data is loaded into the THR.
ISR is read
(Unloading)
IER[1]
enabled
IOW#
(Loading data
into THR)
XR19L402
46
TWO CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
REV. 1.0.3
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