參數(shù)資料
型號： 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））
文件頁數(shù)： 5/46頁
文件大?。?/td> 381K
代理商： XR16C864
XR16C864
5
Rev. 1.10
SYMBOL DESCRIPTION
BCLK A-B
BCLK C-D
1,30
51,80
Baud Rate Generator Output. The baud rate generator clock output is
internally connected to the RCLK input. This pin provides the 16X clock of
the selected data rate from the baud rate generator.
O
OP1 A-B
OP1 C-D
3,28
53,78
OP1, or RS-485 direction control signal. General purpose output during
normal operation. RS-485 direction control can be selected when FCTR Bit-
3 is set to “1”. During data transmit cycle, OP1/RS-485 pin is low.
O
DACK A-B
DACK C-D
4,26
55,77
DMA Acknowledge. DMA cycle will start processing when CPU/Host sets
this input low and AEN high. All writes will be to the TX FIFO and all reads
will be from the RX FIFO. A0-A2 and -CSA-D will be ignored.
I
TEST
2,29
52,79
O
Internal circuit test outputs. Not used for normal operation.
GND
GND
96,20
46,71
Pwr
Signal and power ground.
IRTX A-B
IRTX C-D
6,24
57,75
Infrared Transmit Data Output (IrDA) - These pins provide separate infrared
IrDA TX outputs for UART channel’s (A-D). The serial infrared IRTX data is
transmitted via these pins with added start, stop and parity bits. The IRTX
signal will be a logic 0 during reset, idle (no data), or when the transmitter
is disabled. MCR bit-6 selects the standard modem or infrared interface.
O
CHCCLK
42
I
Channel C Clock Input - This input provides the clock for UART channel C.
An external 16X baud clock or the crystal oscillator's output, XTAL2, must
be connected to this pin for normal operation. This input may also be used
with MIDI (Music Instrument Digital Interface) applications when an external
MIDI clock is provided.
INTSEL
87
I
Interrupt Select. (active high, with internal pull-down) - This function is
associated with the 16 mode only. When the 16 mode is selected, this pin
can be used in conjunction with MCR bit-3 to enable or disable the three state
interrupts, INT A-D or override MCR bit-3 and force continuous interrupts.
Interrupt outputs are enabled continuously by making this pin a logic 1.
Making this pin a logic 0 allows MCR bit-3 to control the three state interrupt
output: enable outputs when MCR bit-3 is set to a logic “1” and tri-state
outputs when MCR bit-3 is set to a logic "0". This pin should be low for 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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