参数资料
型号: DS2490
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: 45/50页
文件大小: 530K
代理商: DS2490
DS2490
45 of 50
033199
COMMUNICATION COMMANDS
wLength
0x0000
WRITE EPROM
DT=1 selects the CRC16 generator. Otherwise an 8-bit CRC is
assumed. If Z=1 the comparison of the byte read back for verification
is limited to 0 bits only.
Setup Packet Encoding:
bmRequestType
0x40
COMM_CMD
bRequest
wValue
byte 2
byte 1
0
1
byte 1
byte 2:
byte 1:
0
1
0
1
DT
0
0
0
F
Z
ICP
0
0
IM
wIndex
byte 2
byte 2 – block size (HI), number of bytes to be written, most
significant byte
byte 1 – block size (LOW), number of bytes to be written, least
significant byte
0x0000
wLength
READ CRC PROT PAGE
DT=1 selects the CRC16 generator, otherwise an 8-bit CRC is
assumed. This command is also applicable to the Read IPR and Read
I/O Buffer function of the crypto iButton if CIB=1.
Setup Packet Encoding:
bmRequestType
0x40
COMM_CMD
bRequest
wValue
byte 2
byte 1
0
1
byte 1
byte 2:
byte 1:
0
1
PS
1
DT
0
0
1
F
0
ICP
0
0
IM
wIndex
byte 2
byte 2 –number of pages to be read.
byte 1 – page size: number of bytes that are considered a page.
Typical is 32-decimal for data memory, 8 for status memory, and 40
decimal for Monetary iButtons. Page size 0 indicates a 256-byte
page.
0x0000
wLength
READ REDIRECT PAGE
W/CRC
Setup Packet Encoding:
bmRequestType
0x40
COMM_CMD
bRequest
wValue
byte 2
byte 1
0
byte 2:
0
0
1
0
F
ICP
1
相关PDF资料
PDF描述
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
DS26334G 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit
DS26334GN 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
DS2490S 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
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)