參數(shù)資料
型號: XR88C681P/40
廠商: Exar Corporation
文件頁數(shù): 82/101頁
文件大?。?/td> 0K
描述: IC UART CMOS DUAL 40PDIP
產(chǎn)品變化通告: Leaded UART, V&I Obsolescence 11/Apr/2011
標(biāo)準(zhǔn)包裝: 9
特點(diǎn): *
通道數(shù): 2,DUART
FIFO's: 1 字節(jié),3 字節(jié)
電源電壓: 4.75 V ~ 5.25 V
帶并行端口:
帶CMOS:
安裝類型: 通孔
封裝/外殼: 40-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 40-PDIP
包裝: 管件
XR88C681
81
Rev. 2.11
For Receiving Device
MR1A[7] = 1
For Transmitting Device
MR2B[7] = 1
Start
Assert RTSA
Write 01h to QUART Address 0Eh
(This invokes the “SET OUTPUT
PORT BITS COMMAND” and sets
the Output Port pin, OP0 to a logic
“0”.)
Is
FFULLA
Asserted?
No
RTSA is Automatically
Negated by Receiver
Controlled RTS Function.
Yes
Is
FFULLA
Negated?
No
Yes
Figure 43. A Flow Diagram Depicting an Algorithm That Could be Used to Apply
the Receiver-Controlled RTS/CTS Handshaking Mode
H.1.2 Transmitter-Controlled RTS/CTS Handshaking
In this mode, the Transmitter now has the ability to negate the RTS output (to the Receiving Device). Specifically, this
mode allows the Transmitter to negatye the RTS signal, one bit period after emptying the THR and TSR.
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