参数资料
型号: XR16V2550IL-F
厂商: Exar Corporation
文件页数: 6/46页
文件大小: 0K
描述: IC UART FIFO 16B DUAL 32QFN
标准包装: 490
特点: *
通道数: 2,DUART
FIFO's: 16 字节
规程: RS232,RS422
电源电压: 2.25 V ~ 3.6 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 托盘
FIGURE 8. RECEIVER OPERATION IN NON-FIFO MODE
Receive Data Shift
Register (RSR)
Receive
Data Byte
and Errors
RHR Interrupt (ISR bit-2)
Receive Data
Holding Register
(RHR)
RXFIFO 1
16X or 8X or 4X Clock
( DLD[5:4] )
Receive Data Characters
Data Bit
Validation
Error
Tags in
LSR bits
4:2
FIGURE 9. RECEIVER OPERATION IN FIFO AND AUTO RTS FLOW CONTROL MODE
Receive Data Shift
Register (RSR)
RXFIFO1
16X or 8X or 4X Clock
( DLD[5:4] )
Error
T
a
gs
(16-
sets)
E
rro
rT
ag
si
n
LSR
bi
ts
4:
2
Receive Data Characters
Data Bit
Validation
Receive
Data FIFO
Receive
Data
Receive Data
Byte and Errors
RHR Interrupt (ISR bit-2) programmed for
desired FIFO trigger level.
FIFO is Enabled by FCR bit-0=1
RTS# de-asserts when data fills above the flow
control trigger level to suspend remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
RTS# re-asserts when data falls below the flow
control trigger level to restart remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
16 bytes by 11-bit wide
FIFO
Trigger=8
Data falls to
4
Data fills to
14
Example
: - RX FIFO trigger level selected at 8 bytes
(See Note Below)
XR16V2550
14
HIGH PERFORMANCE DUART WITH 16-BYTE FIFO
REV. 1.0.3
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