REV. 1.1.1 2.0 FUNCTIONAL DESCRIPTIONS 2.1 CPU Interface The CPU in" />
參數(shù)資料
型號： XR68M752IB-0B-EVB
廠商： Exar Corporation
文件頁數(shù)： 2/54頁
文件大?。?/td> 0K
描述： EVAL BOARD FOR 68M752 49BGA
標(biāo)準(zhǔn)包裝： 1
系列： *
XR16M752/XR68M752
10
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
REV. 1.1.1
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 XR16M752 data interface supports the Intel compatible types of CPUs while the
XR68M752 supports both the Intel and Motorola compatible data interfaces. No clock (oscillator nor external
clock) is required to operate a data bus transaction. Each bus cycle is asynchronous using CS#, IOR# and
IOW# signals. Both UART channels share the same data bus for host operations. The data bus
interconnections are shown in Figure 4.
FIGURE 4. XR16M752/XR68M752 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-422
or RS-485
Serial Interface of
RS-232, RS-422
or RS-485
(no connect)
2.25 to 3.6 Volt VCC
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#
VCC
UART_RESET#
(no connect)
VCC
Intel Data Bus Interconnections
Motorola Data Bus Interconnections
Serial Interface of
RS-232, RS-422
or RS-485
Serial Interface of
RS-232, RS-422
or RS-485
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR68M752IB49 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR68M752IB49-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(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
XR68M752IL-0B-EB 功能描述:界面開發(fā)工具 Support XR68M752 32L QFN, PCI Interface 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
XR68M752IL32 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR68M752IL32-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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