參數(shù)資料
型號(hào)： XR16C864
廠商： Exar Corporation
元件分類： 通用總線功能
英文描述： Quad UART with RX/TX FIFO Counters and 128-byte FIFO(四通用異步接收器/發(fā)送器（帶RX/TX 先進(jìn)先出計(jì)數(shù)器和128字節(jié)先進(jìn)先出）)
中文描述： 四路與異步接收/發(fā)送FIFO的計(jì)數(shù)器和128字節(jié)的FIFO（四通用異步接收器/發(fā)送器（帶了Rx / Tx先進(jìn)先出計(jì)數(shù)器和128字節(jié)先進(jìn)先出））
文件頁(yè)數(shù)： 8/46頁(yè)
文件大?。?/td> 381K
代理商： XR16C864
XR16C864
8
Rev. 1.10
SYMBOL DESCRIPTION
TX/IRTX A-B
TX/IRTX C-D
14,16
65,67
Transmit Data - These outputs are associated with individual serial transmit
channel data from the 864. Two user selectable interface options are
available. The first user option supports a standard modem interface. The
second option provides an Infrared encoder interface, see figures 2/3. When
using the standard modem interface, the TX signal will be a logic 1 during
reset, idle (no data), or when the transmitter is disabled. The inactive state
(no data) for the Infrared encoder/ decoder interface is a Logic 0. MCR bit-
6 selects the standard modem or infrared interface. During the local loop-
back mode, the TX input pin is disabled and TX data is internally connected
to the UART RX Input.
O
-RESET
RESET
Reset. - In the 16 mode a logic 1 on this pin will reset the internal registers
and all the outputs. The UART transmitter output and the receiver input will
be disabled during reset time. (See XR16C864 External Reset Conditions for
initialization details.) When 16/-68 is a logic 0 (68 mode), this pin functions
similarly but, as an inverted reset interface signal, -RESET.
43
I
-CS A-B
-CS C-D
13,17
64,68
Chip Select A, B, C, D (active low) - This function is associated with the 16
mode only, and for individual channels, “A” through “D.” When in 16 Mode,
these pins enable data transfers between the user CPU and the XR16C864
for the channel(s) addressed. Individual UART sections (A, B, C, D) are
addressed by providing a logic 0 on the respective -CS A-D pin. When the
68 mode is selected, the functions of these pins are reassigned. 68 mode
functions are described under the their respective name/pin headings.
I
INT A-B
INT C-D
12,18
63,69
Interrupt A, B, C, D (active high) - This function is associated with the 16
mode only. These pins provide individual channel interrupts, INT A-D. INT A-
D are enabled when MCR bit-3 is set to a logic 1, interrupts are enabled in
the interrupt enable register (IER), and when an interrupt condition exists.
Interrupt conditions include: receiver errors, available receiver buffer data,
transmit buffer empty, or when a modem status flag is detected. When the
68 mode is selected, the functions of these pins are reassigned. 68 mode
functions are described under the their respective name/pin headings.
O
-IOR
66
I
Input/Output Read. (active low Strobe) - This function is associated with the
16 mode only. A logic 0 transition on this pin will load the contents of an
internal register defined by address bits A0-A2 onto the XR16C864 data bus
(D0-D7) for access by an external CPU. This pin is disabled in the 68 mode.
Symbol
Pin
100
Signal
type
Pin Description
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16C864CQ 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16C864CQ-0A-EVB 功能描述:UART 接口集成電路 Supports C864 100 ld QFP, ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16C864CQ-0B-EB 功能描述:界面開發(fā)工具 Eval Board for XR16C864CQ Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR16C864CQ-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16C864CQTR-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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