參數(shù)資料
型號(hào): XR16C864IQ-F
廠商: Exar Corporation
文件頁(yè)數(shù): 51/51頁(yè)
文件大?。?/td> 0K
描述: IC UART FIFO 128B QUAD 100QFP
標(biāo)準(zhǔn)包裝: 66
特點(diǎn): *
通道數(shù): 4,QUART
FIFO's: 128 字節(jié)
規(guī)程: RS232,RS485
電源電壓: 2.97 V ~ 5.5 V
帶自動(dòng)流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動(dòng)位檢測(cè)功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類(lèi)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(pán)
其它名稱(chēng): 1016-1277
XR16C864
9
REV. 2.2.0
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
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 864 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 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 3.
FIGURE 3. XR16C864 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
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