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参数资料
| 型号： | DS2480 |
| 英文描述： | Serial 1.Wire Line Driver |
| 中文描述： | 串行、1-Wire线驱动器 |
| 文件页数： | 3/26页 |
| 文件大小： | 185K |
| 代理商： | DS2480 |
DS2480
042498 3/26
DS2480 BLOCK DIAGRAM
Figure 1
MUX
CONFIGURATION
REGISTER
ANALYZER
PROTOCOL
TIMING
GENERATOR
PROTOCOL
CONVERTER
1–WIRE
DRIVER
MS BIT OF SPEED CONTROL
(1 = RXD IS INVERTED)
V
PP
1–W
RXD
POL
TXD
DEVICE OPERATION
The DS2480 can be described as a complex state
machine with two static and several dynamic states.
Two device–internal flags as well as functions assigned
to certain bit positions in the command codes determine
the behavior of the chip, as shown in the state transition
diagram (Figure 2). The DS2480 requires and gener-
ates a communication protocol of 8 data bits per charac-
ter, 1 stop bit and no parity. It is permissible to use two
stop bits on the TXD line. However, the DS2480 will only
assert a single stop bit on RXD.
When powering up, the DS2480 performs a master
reset cycle and enters the
Command Mode
, which is
one of the two static states. The device now expects to
receive one 1–Wire reset command on the TXD line
sent by the host at a data rate of 9600 bits per second
(see section Communication Commands for details).
This command byte is required solely for calibration of
the timing generator the DS2480 and is not translated
into any activity on the 1–Wire bus. After this first com-
mand byte the device is ready to receive and execute
any command as described later in this document.
A master reset cycle can also be generated by means of
software. This may be necessary if the host for any rea-
son has lost synchronization with the device. The
DS2480 will perform a master reset cycle equivalent to
the power–on reset if it detects start polarity in place of
the stop bit. The host has several options to generate
this condition. These include making the UART gener-
ate a break signal, sending a NULL character at a data
rate of 4800 bps and sending any character with parity
enabled and selecting space polarity for the parity bit.
As with the power–on reset, the DS2480 requires a
1–Wire reset command sent by the host at a data rate of
9600 bps for calibration.
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PDF描述 |
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| DS2480S | Serial 1.Wire Line Driver |
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| DS2490S | USB to 1-Wire Bridge Chip |
| DS2502-E64 | IEEE EUI-64 Node Address Chip |
| DS26334 | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2480B | 功能描述:缓冲器和线路驱动器 RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| DS2480B | 制造商:Maxim Integrated Products 功能描述:IC SERIAL LINE DRIVER 2480 SOIC8 |
| DS2480B/T&R | 功能描述:缓冲器和线路驱动器 RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| DS2480B+ | 功能描述:缓冲器和线路驱动器 Serial - 1-Wire Line Driver RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| DS2480B+R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Serial to 1-Wire Line Driver |
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