参数资料
| 型号： | ADM1169ASTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 32/36页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/SUPERVISOR 32LQFP |
| 标准包装： | 1 |
| 系列： | Super Sequencer® |
| 应用： | 电源监控器，序列发生器 |
| 输入电压： | 3 V ~ 14.4 V |
| 电源电压： | 3 V ~ 14.4 V |
| 电流 - 电源： | 4.2mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
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ADM1169
Block Read
In a block read operation, the master device reads a block of
data from a slave device. The start address for a block read must
have been set previously. In the ADM1169 , this is done by a
send byte operation to set a RAM address, or a write byte/word
operation to set an EEPROM address. The block read operation
itself consists of a send byte operation that sends a block read
command to the slave, immediately followed by a repeated start
and a read operation that reads out multiple data bytes, as follows:
1. The master device asserts a start condition on SDA.
Data Sheet
Error Correction
The ADM1169 provides the option of issuing a packet error
checking (PEC) byte after a write to the RAM, a write to the
EEPROM, a block write to the RAM/EEPROM, or a block read
from the RAM/EEPROM. This option enables the user to verify
that the data received by or sent from the ADM1169 is correct.
The PEC byte is an optional byte sent after the last data byte has
been written to or read from the ADM1169 . The protocol is the
same as a block read for Step 1 to Step 12 and then proceeds as
follows:
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
The master sends the 7-bit slave address followed by the
write bit (low).
The addressed slave device asserts an ACK on SDA.
The master sends a command code that tells the slave
device to expect a block read. The ADM1169 command
code for a block read is 0xFD (1111 1101).
The slave asserts an ACK on SDA.
The master asserts a repeat start condition on SDA.
The master sends the 7-bit slave address followed by the
read bit (high).
The slave asserts an ACK on SDA.
The ADM1169 sends a byte-count data byte that tells the
master how many data bytes to expect. The ADM1169 always
returns 32 data bytes (0x20), which is the maximum allowed
by the SMBus Version 1.1 specification.
The master asserts an ACK on SDA.
The master receives 32 data bytes.
The master asserts an ACK on SDA after each data byte.
The master asserts a stop condition on SDA to end the
transaction.
13. The ADM1169 issues a PEC byte to the master. The master
checks the PEC byte and issues another block read, if the
PEC byte is incorrect.
14. A NACK is generated after the PEC byte to signal the end
of the read.
15. The master asserts a stop condition on SDA to end the
transaction.
Note that the PEC byte is calculated using CRC-8. The frame
check sequence (FCS) conforms to CRC-8 by the polynomial
C ( x ) = x 8 + x 2 + x 1 + 1
See the SMBus Version 1.1 specification for details.
An example of a block read with the optional PEC byte is shown
1
2
3
4
5 6
7
8
9
10
11
12
S ADDRESS W A COMMAND 0xFD A S ADDRESS R A COUNT A
(BLOCK READ)
SLAVE SLAVE BYTE
DATA
1
A
13
DATA A
Figure 46. Block Read from the EEPROM or RAM
32
P
1
2
3
4
5 6
7
8
9
10
11
12
S ADDRESS W A COMMAND 0xFD A S
ADDRESS R A COUNT A
DATA A
SLAVE
(BLOCK READ)
SLAVE BYTE
DATA
32
1
13 14 15
A PEC A P
Figure 47. Block Read from the EEPROM or RAM with PEC
Rev. A | Page 32 of 36
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1169ASTZ-RL7 | 功能描述:IC SEQUENCER/SUPERVISOR 32LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:Super Sequencer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| ADM1170 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.6 V to 16.5 V Hot Swap Controller with Soft Start |
| ADM1170-1AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP 16.5V TSOT-23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| ADM1170-2AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP 16.5V TSOT-23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| ADM1171 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.7 V to 16.5 V Hot Swap Controller with Current Sense Output |
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