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参数资料
| 型号： | DS2408S+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/39页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH 8-CHAN ADDRESS 16SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 接口： | 1 线 |
| 输入/输出数： | 8 |
| 中断输出： | 无 |
| 电源电压： | 2.8 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
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DS2408
16 of 39
CONTROL FUNCTION COMMANDS
Once a ROM function command is completed, the Control Function Commands can be issued. The
Control Functions Flow Chart (Figure 8) describes the protocols necessary for accessing the PIO
channels and the special function registers of the DS2408. The communication between the master and
the DS2408 takes place either at standard speed (default, OD = 0) or at overdrive speed (OD = 1). If not
explicitly set into the overdrive mode, the device operates at standard speed.
Read PIO Registers [F0h]
The Read PIO Registers command is used to read any of the device's registers. After issuing the
command, the master must provide the 2-byte target address. After these two bytes, the master reads data
beginning from the target address and may continue until address 008Fh. If the master continues reading,
it will receive an inverted 16-bit CRC of the command, address bytes, and all data bytes read from the
initial starting byte through the end of the register page. This CRC16 is the result of clearing the CRC
generator and then shifting in the command byte followed by the two address bytes and the data bytes
beginning at the first addressed location and continuing through to the last byte of the register page. After
the bus master has received the CRC16, the DS2408 responds to any subsequent read-time slots with
logical 1’s until a 1-Wire Reset command is issued. If this command is issued with target address 0088h
(PIO Logic State Register), the PIO sampling takes place during the transmission of the MS bit of TA2. If
the target address is lower than 0088h, the sampling takes place while the master reads the MS bit from
address 0087h.
Channel-Access Read [F5h]
In contrast to reading the PIO logical state from address 88h, this command reads the status in an endless
loop. After 32 bytes of PIO pin status the DS2408 inserts an inverted CRC16 into the data stream, which
allows the master to verify whether the data was received error-free. A Channel-Access Read can be
terminated at any time with a 1-Wire Reset.
Figure 9. CHANNEL-ACCESS READ TIMING
IO (1-Wire)
STRB\
Example - Sampled State = 72h
MS 2 bits of pre-
vious byte (8Dh)
LS 2 bits of data
byte (72h)
tSPD
Sampling Point
Notes:
1) The "previous byte" could be the command code, the data byte resulting from the previous PIO
sample, or the MS byte of a CRC16. The example shows a read-1 time slot.
2) The sample point timing also applies to the Channel-access Write command, with the "previous byte"
being the write confirmation byte (AAh). No STRB pulse results when sampling occurs during a
Channel-Access Write command.
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| MAX7311AUG+ | IC I/O EXPANDER I2C 16B 24TSSOP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2408S/R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 8-Channel Addressable Switch |
| DS2408S/T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 8-Channel Addressable Switch |
| DS2408S/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 |
| DS2408S+ | 功能描述:接口 - 专用 1-Wire 8-Ch Addressable Switch 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 |
| DS2408S+T&R | 制造商:Maxim Integrated Products 功能描述:ADDRESSABLE SWIT 16SOIC N - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC SWITCH 8-CHAN ADDRESS 16SOIC 制造商:Maxim Integrated Products 功能描述:Interface - Specialized 1-Wire 8-Ch Addressable Switch |
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