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參數(shù)資料
| 型號(hào)： | XR16L788 |
| 廠商： | Exar Corporation |
| 英文描述： | HIGH PERFORMANCE OCTAL UART |
| 中文描述： | 高性能八進(jìn)制的UART |
| 文件頁數(shù)： | 22/42頁 |
| 文件大?。?/td> | 557K |
| 代理商： | XR16L788 |
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XR16L788 OCTAL UART
REV. 1.1.4
22
4.8.3
The Interrupt Enable Register (IER) masks the inter-
rupts from receive data ready, transmit empty, line
status and modem status registers. These interrupts
are reported in the Interrupt Status Register (ISR)
register and also encoded in INT (INT0-INT3) register
in the Device Configuration Registers.
Interrupt Enable Register (IER)
4.9
IER
VERSUS
R
ECEIVE
FIFO I
NTERRUPT
M
ODE
O
PERATION
When the receive FIFO (FCR BIT-0 = a logic 1) and
receive interrupts (IER BIT-0 = logic 1) are enabled,
the RHR interrupts (see ISR bits 3 and 4) status will
reflect the following:
A.
The receive data available interrupts are issued
to the host when the FIFO has reached the pro-
F
IGURE
13. R
ECEIVER
O
PERATION
IN
NON
-FIFO M
ODE
Receive Data Shift
Register (RSR)
Receive
Data Byte
and Errors
RHR Interrupt (ISR bit-2)
Receive Data
Holding Register
(RHR)
RXFIFO1
16X or 8X Clock
(8XMODE Register)
Receive Data Characters
Data Bit
Validation
Error
Flags in
LSR bits
4:2
F
IGURE
14. R
ECEIVER
O
PERATION
IN
FIFO
AND
F
LOW
C
ONTROL
M
ODE
Receive Data Shift
Register (RSR)
RXFIFO1
16X or 8X Sampling
Clock (8XMODE Reg.)
E
(
E
L
64 bytes by 11-
bit wide FIFO
Receive Data Characters
FIFO Trigger=48
Example:
- FIFO trigger level set at 48 bytes
- RTS/DTR hyasteresis set at +/-8 chars.
Data fills to 56
Data falls to 40
Data Bit
Validation
Receive Data
FIFO
(64-byte)
Receive
Data
Receive Data
Byte and Errors
RHR Interrupt (ISR bit-2) is programmed
at FIFO trigger level (RXTRG).
FIFO is Enable by FCR bit-0=1
RTS#/DTR# de-asserts when data fills above
the trigger level to suspend remote transmitter.
Enable by EFR bit-6=1, MCR bit-2.
RTS#/DTR# re-asserts when data falls below
the trigger level to restart remote transmitter.
Enable by EFR bit-6=1, MCR bit-2.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| XR16L788_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART |
| XR16L788_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART |
| XR16L788CQ | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART |
| XR16L788CQ-0A-EVB | 功能描述:UART 接口集成電路 Supports L788 100 ld QFP, ISA Interface 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 |
| XR16L788CQ-0B-EVB | 功能描述:界面開發(fā)工具 Supports L788 100 ld QFP, PCI Interface 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 |
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