- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376968 > DS2406P Dual Addressable Switch Plus 1K-Bit Memory PDF資料下載
參數(shù)資料
| 型號： | DS2406P |
| 英文描述： | Dual Addressable Switch Plus 1K-Bit Memory |
| 中文描述： | 雙址開關(guān)與1K位存儲器 |
| 文件頁數(shù)： | 15/30頁 |
| 文件大?。?/td> | 156K |
| 代理商： | DS2406P |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
DS2406
15 of 30
The TOG bit of Channel Control Byte 1 specifies if one is always reading or writing (TOG = 0) or if one
is going to change from reading to writing or vice versa after every data byte that has been sent to or
received from the DS2406 (TOG = 1). When accessing one channel, one byte is equivalent to eight reads
from or writes to the selected PIO pin. When accessing two channels, one byte is equivalent to four reads
or writes from/to each channel.
The initial mode (reading or writing) for accessing the PIO channels is specified in the IM bit. For read-
ing, IM has to be set to 1, for writing IM needs to be 0. If the TOG bit is set to 0, the device will always
read or write as specified by the IM bit. If TOG is 1, the device will use the setting of IM for the first byte
to be transmitted and will alternate between reading and writing after every byte. Table 1 illustrates the
effect of TOG and IM for one-channel as well as for two-channel operation.
THE EFFECT OF TOGGLE MODE AND INITIAL MODE
Table 1
TOG
IM
CHANNELS
0
0
one channel
0
1
one channel
1
0
one channel
EFFECT
Write
all bits to the selected channel
Read
all bits from the selected channel
Write
8 bits,
read
8 bits, write, read, etc. to/from
the selected channel
Read
8 bits,
write
8 bits, read, write, etc. from/to
the selected channel
Repeat: four times (
write
A,
write
B)
Repeat: four times (
read
A,
read
B)
Four times: (
write
A,
write
B), four times: (
read
A,
read
B), write, read, etc.
Four times: (
read
A,
read
B), four times: (
write
A,
write
B), read, write, etc.
1
1
one channel
0
0
1
0
1
0
two channels
two channels
two channels
1
1
two channels
The ALR bit of Channel Control Byte 1 controls whether the activity latch of each channel gets reset.
Both activity latches are cleared simultaneously if the ALR bit is 1. They are not changed if the ALR bit
is 0. An activity latch is set with a negative or positive edge that occurs at its associated PIO channel.
Channel Control Byte 1 also controls the internal CRC generator to safeguard data transmission between
the bus master and the DS2406 for channel access. It does not affect reading from or writing to the
memory sections of the DS2406. The CRC control bits (bit 0 and bit 1) can be set to create and protect
data packets that have the size of 8 bytes or 32 bytes. If desired, the device can safeguard even single
bytes by a 16-bit CRC. This setting, however, limits the average PIO sampling rate to about one third of
its maximum possible value. The codes for the CRC control are shown in the table below.
CRC1
0
0
1
1
CRC0
0
1
0
1
Description
CRC disabled (no CRC at all)
CRC after every byte
CRC after 8 bytes
CRC after 32 bytes
The CRC provides a high level of safeguarding data. A detailed description of CRCs is found in
Application Note 27 and the “Book of DS19xx iButton Standards”. If the CRC is disabled, the CRC-
related sections in the flow chart are skipped.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2406T | Dual Addressable Switch Plus 1K-Bit Memory |
| DS2406V | Dual Addressable Switch Plus 1K-Bit Memory |
| DS2406X | Dual Addressable Switch Plus 1K-Bit Memory |
| DS2407 | Dual Addressable Switch Plus 1K.Bit Memory |
| DS2407P | Dual Addressable Switch Plus 1K.Bit Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2406P/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Addressable Switch Plus 1kbit Memory |
| DS2406P/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Addressable Switch Plus 1kbit Memory |
| DS2406P/T&R | 制造商:Maxim Integrated Products 功能描述:IC SW DL ADDRESS W/1K MEM 6-TSOC |
| DS2406P/T&R | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS2406P/TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。