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参数资料
| 型号： | MAX14830ETM+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/68页 |
| 文件大小： | 0K |
| 描述： | IC UART |
| 产品培训模块： | Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX14830EVKIT# | 功能描述:界面开发工具 MAX14830 Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压: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 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1483CPA | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1483CPA+ | 功能描述:RS-422/RS-485 接口 IC Slew-Rate-Limited RS-485 Transceivers RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
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