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参数资料
| 型号： | DS2490S |
| 英文描述： | USB to 1-Wire Bridge Chip |
| 中文描述： | USB与1 - Wire桥接芯片 |
| 文件页数： | 32/50页 |
| 文件大小： | 530K |
| 代理商： | DS2490S |
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DS2490
32 of 50
033199
DS2490 RESULT REGISTER VALUE DEFINITION
Table 17
Data Value Description
1-Wire Device Detect Byte
Communication Command Error
Result
EOS
Data
0xA5
bit3
bit7
bit6
bit5
bit4
bit2
bit1
bit0
RDP
CRC
CMP
VPP
APP
SH
NRS
Bit Definitions:
EOS
A value of 1 indicates that a SEARCH ACCESS with
SM=1 ended sooner than expected reporting less ROM
Ids than specified in the “number of devices” parameter.
A value of 1 indicates that a READ REDIRECT PAGE
WITH/CRC encountered a page that is redirected.
A value of 1 indicates that a CRC error occurred when
executing one of the following commands: WRITE
SRAM PAGE, WRITE EPROM, READ CRC PROT
PAGE, or READ REDIRECT PAGE W/CRC.
A value of 1 indicates that there was an error when
reading the confirmation byte with a SET PATH
command or that the WRITE EPROM command did not
program successfully.
A value of 1 indicates that during a PULSE with
TYPE=1 or WRITE EPROM command the 12V
programming pulse was not seen on the 1-Wire bus; this
could indicate that there were other devices on the bus
that clamped the voltage to a value lower than VPP or
that the programming pulse was disabled with a mode
command.
A value of 1 indicates that a 1-WIRE RESET revealed an
Alarming Presence Pulse.
A value of 1 indicates that a 1-WIRE RESET revealed a
short to the 1-Wire bus or the SET PATH command
could not successfully connect a branch due to a short.
A value of 1 indicates that a 1-WIRE RESET did not
reveal a Presence Pulse or the SET PATH command did
not get a Presence Pulse from the branch that was to be
connected.
A value of 0 in any of these fields indicates that the error
condition was not detected.
RDP
CRC
CMP
VPP
APP
SH
NRS
USB TRANSCEIVER
Integrated within the DS2490 is a USB-compliant bus transceiver. To comply with USB cable
termination requirements, resistors external to the DS2490 must be installed as shown in Figure 11. The
24-ohm, 1% tolerance resistors are necessary to bring the total steady state resistance of each driver to the
28-43 ohm range required by the USB core specification. The 1.5 kohm pullup resistor is required to
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2490S+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Rail/Tube 制造商:Maxim Integrated Products 功能描述:USB 1-W BRIDGE CHIP 24-SO LF 制造商:Maxim Integrated Products 功能描述:Bulk |
| DS2490S+T&R | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS2490S+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:USB to 1-Wire Bridge Chip |
| DS2490X | 制造商:未知厂家 制造商全称:未知厂家 功能描述:USB to 1-Wire Bridge Chip(468.41 k) |
| DS2490X/T&R | 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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