- 您現(xiàn)在的位置：買賣IC網 > PDF目錄376454 > XR16C864 (Exar Corporation) 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 先進先出計數(shù)器和128字節(jié)先進先出）) PDF資料下載
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 先進先出計數(shù)器和128字節(jié)先進先出）) |
| 中文描述： | 四路與異步接收/發(fā)送FIFO的計數(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先進先出計數(shù)器和128字節(jié)先進先出）） |
| 文件頁數(shù)： | 32/46頁 |
| 文件大?。?/td> | 381K |
| 代理商： | XR16C864 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁當前第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
XR16C864
32
Rev. 1.10
FEATURE CONTROL REGISTER
This register controls the XR16C864 new functions that
are not available on ST16C550 or ST16C650.
FCTR BIT 0-1:
User selectable -RTS delay (hysteresis level) for hard-
ware flow control application, when programmable trig-
ger levels are chosen (FCTR bits 5 & 4 are both "1").
After reset, these bits are set to “0”. In the table below,
TRG indicates the programmed trigger level.
EMSR
Bits 5,4 Bits 1,0
FCTR
-RTS Switch Points*
0 0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
TRG +/- 0
TRG +/- 4
TRG +/- 6
TRG +/- 8
TRG +/- 8
TRG +/- 16
TRG +/- 24
TRG +/- 32
TRG +/- 12
TRG +/- 20
TRG +/- 28
TRG +/- 36
TRG +/- 40
TRG +/- 44
TRG +/- 48
TRG +/- 52
0 1
1 1
1 0
* the switch point cannot be <1 or > 128.
FCTR BIT-2:
0 = Select RX input as encoded IrDa data.
1 = Select RX input as active high encoded IrDa data.
FCTR BIT-3:
Interrupt type select and Auto RS-485 Direction control.
0 = Standard ST16C550 mode. Transmitter generates
interrupt when transmit holding register is empty and
transmit shift register is shifting data out.
1 = Transmit empty interrupt. Transmit interrupt is
generated when transmitter holding and shift register
is empty. The OP2* output pin will stay high during
receive mode and will go low during transmit mode.
FCTR BIT 4-5:
Transmit / receive trigger table select.
FCTR
Bit-5
FCTR
Bit-4
Table
0
0
1
1
0
1
0
1
Table-A (TX/RX)
Table-B (TX/RX)
Table-C (TX/RX)
Table-D (TX/RX)
FCTR BIT-6:
Register mode select.
0 = Scratch Pad register is selected as general read and
write register. ST16C550 compatible mode.
1 = FIFO count register, Enhanced Mode Select
Register. Number of characters in transmit or receive
holding register can be read via scratch pad register
when this bit is set. (See Table 7).
FCTR BIT-7:
Programmable trigger register select.
0 = Receiver programmable trigger level register is
selected.
1 = Transmitter programmable trigger level register is
selected. (See Table 7).
TRIGGER LEVEL / FIFO DATA COUNT REGISTER
User programmable transmit / receive trigger level
register. See Table 7.
TRG BIT 0-7: Write only.
these bits are used to programmed desire trigger
levels that are not available in standard tables.
TRG BIT 0-7: Read only.
Transmit / receive FIFO count. Number of characters
in transmit or receive FIFO can be read via this register.
ENHANCED MODE SELECT REGISTER
This register is accessible only when FCTR Bit-6 is set
EMSR BIT-0: “Write only”
0 = Receive FIFO count register. The scratch pad
register is used to provide the receive FIFO count when
it is read.
相關PDF資料 |
PDF描述 |
|---|---|
| XR16C872 | Dual UART with 1284 Parallel Port and Plug-and-Play（PnP） Controller(雙通用異步接收器/發(fā)送器（帶1284雙向并行端口和即插即用控制器）) |
| XR16L2450 | 2.25V TO 5.5V DUART |
| XR16L2450IJ | 97-3108A20-29S-KIT |
| XR16L2450IM | 2.25V TO 5.5V DUART |
| XR16L2550IJ | LOW VOLTAGE DUART WITH 16-BYTE FIFO |
相關代理商/技術參數(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。