參數資料
型號： XR16V2751IM-0B-EB
廠商： Exar Corporation
文件頁數： 51/52頁
文件大?。?/td> 0K
描述： EVAL BOARD FOR V2751 48TQFP
標準包裝： 1
系列： *
XR16V2751
8
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE FEATURE
REV. 1.0.1
2.0
FUNCTIONAL DESCRIPTIONS
2.1
CPU Interface
The CPU interface is 8 data bits wide with 3 address lines and control signals to execute data bus read and
write transactions. The V2751 data interface supports the Intel compatible types of CPUs and it is compatible
to the industry standard 16C550 UART. No clock (oscillator nor external clock) is required to operate a data
bus transaction. Each bus cycle is asynchronous using CSA/B#, IOR# and IOW# or CS#, R/W# and A3 inputs.
Both UART channels share the same data bus for host operations. A typical data bus interconnection for Intel
and Motorola mode is shown in Figure 3.
2.2
5-Volt Tolerant Inputs
The V2751 can accept up to 5V inputs even when operating at 3.3V or 2.5V. But note that if the V2751 is
operating at 2.5V, its VOH may not be high enough to meet the requirements of the VIH of a CPU or a serial
transceiver that is operating at 5V. Caution: XTAL1 is not 5 volt tolerant.
FIGURE 3. XR16V2751 TYPICAL INTEL/MOTOROLA DATA BUS INTERCONNECTIONS
VCC
OP2A#
DSRA#
CTSA#
RTSA#
DTRA#
RXA
TXA
RIA#
CDA#
OP2B#
DSRB#
CTSB#
RTSB#
DTRB#
RXB
TXB
RIB#
CDB#
GND
A0
A1
A2
UART_CSA#
UART_CSB#
IOR#
IOW #
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
CSA#
CSB#
D0
D1
D2
D3
D4
D5
D6
D7
IOR#
IOW #
UART
Channel A
UART
Channel B
UART_INTB
UART_INTA
INTB
INTA
RXRDYA#
TXRDYA#
RXRDYA#
TXRDYA#
RXRDYB#
TXRDYB#
RXRDYB#
TXRDYB#
UART_RESET
RESET
Serial Interface of
RS-232, RS-485
Serial Interface of
RS-232, RS-485
2750_int
Intel Data Bus Interconnections
(no connect)
2.25 to 5.5 Volt VCC
OP2A#
DSRA#
CTSA#
RTSA#
DTRA#
RXA
TXA
RIA#
CDA#
OP2B#
DSRB#
CTSB#
RTSB#
DTRB#
RXB
TXB
RIB#
CDB#
GND
A0
A1
A2
UART_CS#
A3
R/W#
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
CSA#
CSB#
D0
D1
D2
D3
D4
D5
D6
D7
IOR#
IOW#
UART
Channel A
UART
Channel B
UART_IRQ#
INTB
INTA
RXRDYA#
TXRDYA#
RXRDYA#
TXRDYA#
RXRDYB#
TXRDYB#
RXRDYB#
TXRDYB#
RESET#
RS-232 Serial Interface
Motorola Data Bus Interconnections
VCC
UART_RESET#
(no connect)
VCC
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相關代理商/技術參數
參數描述
XR16V2751IM-F 功能描述:UART 接口集成電路 W/64 BYTE FIFO RoHS:否 制造商:Texas Instruments 通道數量:2 數據速率: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
XR16V2752 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16V2752_07 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16V2752IJ 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16V2752IJ-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數量:2 數據速率: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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