- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362800 > EVAL-AD5934EB (Analog Devices, Inc.) 250 kSPS, 12-Bit Impedance Converter, Network Analyzer PDF資料下載
參數(shù)資料
| 型號： | EVAL-AD5934EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 250 kSPS, 12-Bit Impedance Converter, Network Analyzer |
| 中文描述： | 250 kSPS的，12位阻抗轉(zhuǎn)換器，網(wǎng)絡(luò)分析儀 |
| 文件頁數(shù)： | 24/32頁 |
| 文件大?。?/td> | 335K |
| 代理商： | EVAL-AD5934EB |
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頁當(dāng)前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
AD5934
WRITING/READING TO THE AD5934
The interface specification defines several different protocols
for different types of read and write operations. This section
describes the protocols used in the AD5934. The figures in this
section use the following abbreviations:
S
Start
P
Stop
R
Read
W Write
A
Acknowledge
A
No acknowledge write byte/command byte
Rev. 0 | Page 24 of 32
User Command Codes
The command codes in Table 18 are used for reading/writing to
the interface. They are further explained in this section, but are
grouped here for easy reference.
Table 18.
Command
Code
Name
Code Description
1010 0000
Block
Write
multiple bytes to the RAM. See the
Block Write section.
1010 0001
Block
Read
multiple bytes from RAM/memory.
See the Block Read section.
1011 0000
Address
Pointer
the address pointer to any location in
the memory. The data contains the
address of the register where the
pointer should be pointing.
Write Byte/Command Byte
In this operation the master device sends a byte of data to the
slave device. The write byte can either be a data byte write to a
RAM location or can be a command operation. To write data to
a register the command sequence is as follows:
Code
This command is used when writing
This command is used when reading
This command enables the user to set
1.
The master device asserts a start condition on SDA.
2.
The master sends the 7-bit slave address followed by the
write bit (low).
3.
The addressed slave device asserts ACK on SDA.
4.
The master sends a register address.
5.
The slave asserts ACK on SDA.
6.
The master sends a data byte.
7.
The slave asserts ACK on SDA.
8.
The master asserts a stop condition on SDA to end the
transaction.
S
SLAVE
ADDRESS
REGISTER
ADDRESS
REGISTER
DATA
A
W
A
A
P
0
Figure 30. Writing Register Data to Register Address
In the AD5934, the write byte protocol is also used to set a
pointer to a register location. This is used for a subsequent
single-byte read from the same address or block read or write
starting at that address.
To set a register pointer, the following sequence is applied:
1.
The master device asserts a start condition on SDA.
2.
The master sends the 7-bit slave address followed by the
write bit (low).
3.
The addressed slave device asserts ACK on SDA.
4.
The master sends a pointer command code (see Table 18, a
pointer command = 1011 0000).
5.
The slave asserts ACK on SDA.
6.
The master sends a data byte (a register location where
pointer is to point).
7.
The slave asserts ACK on SDA.
8.
The master asserts a stop condition on SDA to end the
transaction.
S
A
W
A
A
P
POIN1011 0000
ASLAVE
RETO POINT TO
0
Figure 31. Setting Pointer to Register Address
BLOCK WRITE
In this operation, the master device writes a block of data to a
slave device. The start address for a block write must previously
have been set. In the case of the AD5934 this is done by setting
a pointer to set the register address.
1.
2.
The master device asserts a start condition on SDA.
The master sends the 7-bit slave address followed by the
write bit (low).
The addressed slave device asserts ACK on SDA.
The master sends an 8-bit command code (1010 0000) that
tells the slave device to expect a block write.
The slave asserts ACK on SDA.
The master sends a data byte that tells the slave device the
number of data bytes to be sent to it.
The slave asserts ACK on SDA.
The master sends the data bytes.
The slave asserts ACK on SDA after each data byte.
10.
The master asserts a stop condition on SDA to end the
transaction.
3.
4.
5.
6.
7.
8.
9.
A
A
A
A
S
W
A
P
ASLAVE
WRITE
BNUMBER
BYTE 0
BYTE 1
BYTE 2
0
A
Figure 32. Writing a Block Write
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EVAL-AD7143-1EBZ | Programmable Controller for Capacitance Touch Sensors |
| EVAL-AD7147-1EBZ | CapTouch⑩ Programmable Controller for Single-Electrode Capacitance Sensors |
| EVAL-AD7147EBZ | CapTouch⑩ Programmable Controller for Single-Electrode Capacitance Sensors |
| EVAL-AD7265CB1 | Differential Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC |
| EVAL-AD7266CB1 | Differential Input, Dual 2 MSPS, 12-Bit, 3-Channel SAR ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD5934EBZ | 功能描述:BOARD EVALUATION FOR AD5934 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板 |
| EVAL-AD607EBZ | 功能描述:BOARD EVALUATION FOR AD607 RoHS:是 類別:RF/IF 和 RFID >> RF 評估和開發(fā)套件，板 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關(guān)產(chǎn)品:- 已供物品:模塊 其它名稱:SER3796 |
| EVAL-AD608EBZ | 功能描述:BOARD EVALUATION FOR AD608 RoHS:是 類別:RF/IF 和 RFID >> RF 評估和開發(fā)套件，板 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關(guān)產(chǎn)品:- 已供物品:模塊 其它名稱:SER3796 |
| EVAL-AD7021DBZ5 | 制造商:Analog Devices 功能描述:EVAL BOARD ((NS)) |
| EVAL-AD7091RSDZ | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 EVALUATION BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。