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參數(shù)資料
| 型號： | MAX14830ETM+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 11/68頁 |
| 文件大?。?/td> | 0K |
| 描述： | SEMICONDUCTOR OTHER |
| 標(biāo)準(zhǔn)包裝： | 43 |
| 系列： | * |
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19
Maxim Integrated
Quad Serial UART with 128-Word FIFOs
MAX14830
The contents of the TxFIFO and RxFIFOs are both
cleared through MODE2[1]: FIFORst.
To halt transmission, set MODE1[1]: TxDisabl to 1. After
MODE1[1] is set, the transmitter completes transmission
of the current character and then ceases transmission.
The TX_ output logic can be inverted through IrDA[5]:
TxInv. If not stated otherwise, all transmitter logic
described in this data sheet assumes that IrDA[5] is 0.
Receiver Operation
The receiver expects the format of the data at RX_ to be
as shown in Figure 4. The quiescent logic state is high
and the first bit (the START bit) is logic-low. The receiver
samples the data near the midbit instant (Figure 4). The
received words and their associated errors are depos-
ited into the Receive FIFO. Errors and status informa-
tion are stored for every received word (Figure 5). The
host reads the data out of the Receive FIFO through
the Receive Hold Register (RHR), oldest data first. The
status information of the most recently read word in the
RHR is located in the Line Status Register (LSR). After a
word is read out of the RHR, the LSR contains the status
information for that word.
The following three error conditions are determined for
each received word: parity error, framing error, and
noise on the line. Line noise is detected by checking the
consistency of the logic of the three samples (Figure 6).
Figure 5. Receive FIFO
Figure 4. Receive Data Format
Figure 6. Midbit Sampling
RECEIVED DATA
LSB
START
D0
D1
D2
D3
D4
D5
D6
D7
PARITY
STOP
MSB
MID BIT
SAMPLING
RECEIVE FIFO
FIFOTrgLvl[7:4]
TRIGGER
ISR[3]
WORD
ERROR 128
RxFIFOLvl
4
3
2
1
TIMEOUT
EMPTY
ERRORS
OVERRUN
LSR[1]
RECEIVED
DATA
RHR
RECEIVER
RX_
I2C/SPI INTERFACE
LSR[0]
ISR[6]
LSR[5:2]
CURRENT FILL LEVEL
1
RX_
BAUD
BLOCK
23
45
67
89
ONE BIT PERIOD
10
11
MAJORITY
CENTER
SAMPLER
12
13
14
15
16
A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX14830ETM+ | 功能描述:UART 接口集成電路 Quad Serial UART w/128-Word FIFOs 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 |
| MAX14830ETM+T | 功能描述:UART 接口集成電路 Quad Serial UART w/128-Word FIFOs 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 |
| MAX14830EVKIT# | 功能描述:界面開發(fā)工具 MAX14830 Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MAX14830EVKIT+ | 制造商:Maxim Integrated Products 功能描述:QUAD UART EV-KIT WITH IO-LINK AND MULTIPROTOCOL - Boxed Product (Development Kits) |
| MAX1483C/D+ | 功能描述:RS-485接口IC low-power transceivers for RS-485 and RS-422 communication RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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