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参数资料
| 型号： | ADP1043A-USB-Z |
| 厂商： | Analog Devices Inc |
| 文件页数： | 32/72页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD DIG POWER SUPPLY |
| 标准包装： | 1 |
| 附件类型： | 连接 USB 至 I2C 的接收器 |
| 适用于相关产品： | ADP1043A |
| 相关产品： | ADP1043AACPZ-RLDKR-ND - IC SECONDARY SIDE CTRLR 32LFCSP ADP1043AACPZ-RLCT-ND - IC SECONDARY SIDE CTRLR 32LFCSP ADP1043AACPZ-RLTR-ND - IC SECONDARY SIDE CTRLR 32LFCSP |
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ADP1043A
EEPROM Password Lock
The EEPROM password prevents the EEPROM contents from
being changed accidentally or purposely by an unwanted source.
The password ensures that critical specifications such as OVP
and OCP cannot be changed.
The EEPROM is always locked. When the EEPROM downloads
its contents to the registers, the password is also downloaded. If
the user writes the same password to Register 0x5E twice, the
EEPROM is unlocked and can be updated.
While the EEPROM is unlocked, it is possible to change the
password by writing a new value to Register 0x5E. After this
value is updated, the EEPROM contains the new password. The
factory default password is 0x00.
To update the EEPROM password, the user must write to
Register 0x7B. Writing 0x00 to this register updates the
EEPROM. The user must wait at least 50 ms after this write
command before attempting any further communication
with the ADP1043A.
Note that the EEPROM should not be written to for the first
500 ms after VDD has been applied.
EEPROM Password Change
To change the EEPROM password, follow these steps:
Cyclic Redundancy Check (CRC)
The ADP1043A performs a check to ensure that the EEPROM
contents are correctly downloaded to registers at startup. It
compares the total number of 1s downloaded with the total
number of 1s that were last written to the EEPROM. If there is
a discrepancy, the CRC fault flag is set in Register 0x03, Bit 1.
This flag is used to ensure that the correct data is downloaded
from the EEPROM to the registers at startup.
SOFTWARE GUI
A free software GUI is available for programming and configu-
ring the ADP1043A. The GUI is designed to be intuitive to
power supply designers and dramatically reduces power supply
design and development time. The software includes filter
design and power supply PWM topology windows. The GUI is
also an information center, displaying the status of all readings,
monitoring, and flags on the ADP1043A.
For more information about the GUI, contact Analog Devices
for the latest software and a user guide. Evaluation boards are
also available by contacting Analog Devices.
To download the latest GUI, click on the About button at the
top of the GUI Main screen. Click on the link to check for GUI
updates.
1.
2.
3.
4.
5.
6.
7.
Write the old password to Register 0x5E (password lock
register).
Write the new password to Register 0x5E (password lock
register) for the first time.
Write the new password to Register 0x5E (password lock
register) for the second time.
Write the new password to Register 0x5E (password lock
register) for the third time.
Write 0x00 to Register 0x7B.
Wait 50 ms.
To lock the EEPROM, write any value other than the
password value into Register 0x5E.
Rev. 0 | Page 32 of 72
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相关代理商/技术参数 |
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| ADP1046-100-EVALZ | 功能描述:BOARD EVAL FOR ADP1046-100 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
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