參數(shù)資料
型號: XR16V654IQ-F
廠商: Exar Corporation
文件頁數(shù): 4/58頁
文件大?。?/td> 0K
描述: IC UART FIFO 64B QUAD 100QFP
標(biāo)準(zhǔn)包裝: 66
特點(diǎn): *
通道數(shù): 4,QUART
FIFO's: 64 字節(jié)
規(guī)程: RS232
電源電壓: 2.25 V ~ 3.6 V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 100-BQFP
供應(yīng)商設(shè)備封裝: 100-QFP(14x20)
包裝: 托盤
XR16V654/654D
12
2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO
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 V654 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 for a data bus
transaction. Each bus cycle is asynchronous using CS# A-D, IOR# and IOW# or CS#, R/W#, A4 and A3 inputs.
All four UART channels share the same data bus for host operations. A typical data bus interconnection for
Intel and Motorola mode is shown in Figure 5.
FIGURE 5. XR16V654 TYPICAL INTEL/MOTOROLA DATA BUS INTERCONNECTIONS
VCC
DSRA#
CTSA#
RTSA#
DTRA#
RXA
TXA
RIA#
CDA#
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
UART_RESET
RESET
Serial Interface of
RS-232
Serial Interface of
RS-232
Intel Data Bus (16 Mode) Interconnections
UART
Channel C
UART
Channel D
Similar
to Ch A
Similar
to Ch A
Similar
to Ch A
UART_INTD
UART_INTC
INTD
INTC
UART_CSC#
UART_CSD#
CSC#
CSD#
VCC
16/68#
VCC
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_IRQ#
INTB
INTA
RESET#
Serial Interface of
RS-232
Serial Interface of
RS-232
Motorola Data Bus (68 Mode) Interconnections
VCC
UART_RESET#
(no connect)
DSRA#
CTSA#
RTSA#
DTRA#
RXA
TXA
RIA#
CDA#
UART
Channel A
UART
Channel B
UART
Channel C
Similar
to Ch A
Similar
to Ch A
Similar
to Ch A
INTC
(no connect)
INTD
(no connect)
A4
CSC#
CSD#
VCC
16/68#
UART
Channel D
VCC
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