參數(shù)資料
型號: SC16IS752IBS
廠商: NXP Semiconductors N.V.
元件分類: 連接器件
英文描述: Dual UART with I2C-bus-SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support
封裝: SC16IS752IBS<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html<1<Always Pb-free,;SC16IS752IBS<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html&
文件頁數(shù): 9/60頁
文件大?。?/td> 356K
代理商: SC16IS752IBS
SC16IS752_SC16IS762
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 1 September 2011
9 of 60
NXP Semiconductors
SC16IS752; SC16IS762
Dual UART with I
2
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
7.2.1
Auto-RTS
Figure 5
shows RTS functional timing. The receiver FIFO trigger levels used in Auto-RTS
are stored in the TCR. RTS is active if the RX FIFO level is below the halt trigger level in
TCR[3:0]. When the receiver FIFO halt trigger level is reached, RTS is deasserted. The
sending device (for example, another UART) may send an additional character after the
trigger level is reached (assuming the sending UART has another character to send)
because it may not recognize the deassertion of RTS until it has begun sending the
additional character. RTS is automatically reasserted once the receiver FIFO reaches the
resume trigger level programmed via TCR[7:4]. This reassertion allows the sending
device to resume transmission.
Fig 4.
Auto flow control (Auto-RTS and Auto-CTS) example
RX
FIFO
FLOW
CONTROL
TX
FIFO
PARALLEL
TO SERIAL
TX
FIFO
RX
FIFO
UART 1
UART 2
RX
TX
RTS
CTS
TX
RX
CTS
RTS
002aab656
SERIAL TO
PARALLEL
SERIAL TO
PARALLEL
FLOW
CONTROL
FLOW
CONTROL
FLOW
CONTROL
PARALLEL
TO SERIAL
(1) N = receiver FIFO trigger level.
(2) The two blocks in dashed lines cover the case where an additional character is sent, as described in
Section 7.2.1
.
Fig 5.
RTS functional timing
start
character
N
start
character
N + 1
start
stop
stop
RX
RTS
receive
FIFO
read
N
N + 1
1
2
002aab040
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SC16IS752IPW 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual UART with I2C-bus/SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support