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））
文件頁數(shù)： 33/46頁
文件大?。?/td> 381K
代理商： XR16C864
XR16C864
33
Rev. 1.10
1 = Transmit FIFO count register. The scratch pad
register is used to provide the transmit FIFO count when
it is read.
EMSR BIT-1: “Write only”
0 = Normal.
1 = Alternate receive - transmit FIFO count. When
EMSR Bit-0=1 and EMSR Bit=1, scratch pad register
is used to provide the receive - transmit FIFO count
when it is read every alternate read cycle. The TRG Bit-
7 will provide the FIFO count mode information, TRG Bit-
7=0 receive mode, TRG Bit-7=1 transmit mode. See
Table 7 below.
EMSR BIT-2: "Write Only"
0 = Normal.
1 = Enable TX DMA.
EMSR BIT-3: "Write Only"
0 = Normal.
1 = Enable RX DMA.
EMSR BITS 4,5: "Write Only"
Used for Extended RTS hysteresis range. See Table
under FCTR BITS 0,1.
EMSR BIT 6-7:
Reserved for future use.
Table 7, EMSR and FCTR Controls.
EMSR
Bit-1 Bit-0Bit-7 Bit-6
FCTR
READ 111*
WRITE TO 111*
READ TRG/FC
WRITE TRG/FC
X
X
0
0
0
0
1
1
1
1
X
X
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
0
1
1
1
1
1
1
1
1
Read SPR
Read SPR
Read RX FIFO Count
Read RX FIFO Count
Read TX FIFO Count
Read TX FIFO Count
Read RX FIFO Count
Read RX FIFO Count
Read Alt. FIFO Count Write to EMSR
Read Alt. FIFO Count Write to EMSR
Write to SPR
Write to SPR
Write to EMSR
Write to EMSR
Write to EMSR
Write to EMSR
Write to EMSR
Write to EMSR
Read RX FIFO Count
Read TX FIFO Count
Read RX FIFO Count
Read TX FIFO Count
Read RX FIFO Count
Read TX FIFO Count
Read RX FIFO Count
Read TX FIFO Count
Read RX FIFO Count
Read TX FIFO Count
Write RX Trigger
Write TX Trigger
Write RX Trigger
Write TX Trigger
Write RX Trigger
Write TX Trigger
Write RX Trigger
Write TX Trigger
Write RX Trigger
Write TX Trigger
*This is the address given by A2:A0 (Scratch Pad Register in the General Set of Registers)
XR16C864 EXTERNAL RESET CONDITIONS
REGISTERS
RESET STATE
IER
ISR
LCR
MCR
LSR
MSR
BITS 0-7=0
BIT-0=1, BITS 1-7=0
BITS 0-7=0
BITS 0-7=0
BITS 0-4=0, BITS 5-6=1, BIT 7=0
BITS 0-3=0,
BITS 4-7= input signals
BITS 0-7=0
BITS 0-7=0
BITS 0-7=0
BITS 0-7=0
BITS 0-7=0
FCR
EFR
FCTR
EMSR
TRG
SIGNALS
RESET STATE
TX A-D
-RTS A-D
-DTR A-D
-RXRDY A-D
-TXRDY A-D
High
High
High
High
Low
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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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