FIGURE 7. RECEIVER O
參數(shù)資料
型號(hào)： XR16M698IQ-0A-EVB
廠商： Exar Corporation
文件頁(yè)數(shù)： 6/58頁(yè)
文件大小： 0K
描述： EVAL BOARD FOR M698-A 100QFP
標(biāo)準(zhǔn)包裝： 1
系列： *
FIGURE 7. 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)
RXFIFO1
16X or 8X or 4X Clock
Receive Data Characters
Data Bit
Validation
Error
Tags in
LSR bits
4:2
FIGURE 8. RECEIVER OPERATION IN FIFO AND AUTO RTS FLOW CONTROL MODE
Receive Data Shift
Register (RSR)
RXFIFO1
16X or 8X or 4X Clock
Error
T
a
gs
(64-
sets)
E
rro
rT
ag
si
n
LSR
bi
ts
4:
2
32 bytes by 11-bit
wide
FIFO
Receive Data Characters
FIFO Trigger=16
Example:
- RX FIFO trigger level selected at 16 bytes
(See Note Below)
Data fills to 24
Data falls to 8
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.
XR16M698
14
1.62V TO 3.63V HIGH PERFORMANCE OCTAL UART WITH 32-BYTE FIFO
REV. 1.0.0
2.9
THR and RHR Register Locations
The THR and RHR register addresses for channel 0 to channel 7 are shown in Table 6 below. The THR and
RHR for channels 0 to 7 are located at address 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60 and 0x70
respectively. Transmit data byte is loaded to the THR when writing to that address and receive data is
unloaded from the RHR register when reading that address. Both THR and RHR registers are 16C550
compatible in 8-bit format, so each bus operation can only write or read in bytes.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16M698IQ-0B-EVB 功能描述:界面開(kāi)發(fā)工具 Eval Board for XR16M698IQ-0B RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR16M698IQ100 制造商:EXAR 制造商全稱:EXAR 功能描述:1.62V TO 3.63V HIGH PERFORMANCE OCTAL UART WITH 32-BYTE FIFO
XR16M698IQ100-F 功能描述:UART 接口集成電路 8-ch 32-byte 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
XR16M698IQ100TR-F 制造商:Exar Corporation 功能描述:UART 8-CH 32Byte FIFO 1.8V/2.5V/3.3V 100-Pin PQFP T/R 制造商:Exar Corporation 功能描述:XR16M698IQ100TR-F
XR16M752 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
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