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參數(shù)資料
| 型號： | IP175 |
| 英文描述： | 5-port 10/100M Single Chip Switch |
| 中文描述： | 5端口10/100M自適應單片開關(guān) |
| 文件頁數(shù)： | 18/29頁 |
| 文件大?。?/td> | 202K |
| 代理商： | IP175 |
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IP175
EEPROM Interface
Preliminary, Specification subject to change without notice
IP175-DS-P05
Jul. 19, 2002
18
During reset, IP175 sets the default value for each bit.
After reset, IP175 latches the setting on pins at the end
of reset and begins to read the content in the EEPROM.
The data in EEPROM is valid only if there is a specific
pattern 55AA read in the register 0. If there is no
EEPROM, IP175 keeps the value read from resistors
setting. IP175 is still in reset state before finishing
EEPROM reading.
IP175 will stop reading the content of an EEPROM if
there is no specific pattern 55AA read in the register 0.
After IP175 read the EEPROM, the EEPROM pins
(BP_KIND and LED_SEL) are kept in input mode.
All fields in EEPROM corresponding to the registers of
IP175 should be filled with correct value if an EEPROM
is used. Because the default value in IP175 will be
replaced with the content in EEPROM if it is valid.
IP175 uses a 93C46 EEPROM device. The detail
operation is illustrated in the following figure.
Internal PLL clock
Internal Reset
>10us
Power On
Latch setting
on pins
Update setting with the
content of EEPROM
(Finish reading EEPROM)
RESETB
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