參數(shù)資料
型號(hào): IP175CLF
廠商: Electronic Theatre Controls, Inc.
英文描述: 5 Port 10/100 Ethernet Integrated Switch
中文描述: 5端口10/100以太網(wǎng)集成開關(guān)
文件頁數(shù): 31/111頁
文件大小: 679K
代理商: IP175CLF
IP175C/IP175C LF/IP175CH/IP175CH LF
Data Sheet
Pin description
(continued)
Copyright
2004, IC Plus Corp.
31/111
Mar 09, 2007
IP175C/IP175CH-DS-R14
Pin No.
Misc.
123
Label
Type
Description
X1
I
System clock input or crystal input
It is recommended to connect X1 and X2 to a crystal. If the clock
source is from another chip, the clock should be active at least
for 1ms before pin 93 RESETB de-asserted.
Crystal output
Reset, low active
Test mode enable
It should be connected to GND for normal operation.
122
93
52
X2
RESETB
TEST2
O
I
IPL
EEPROM
53
SCL
IPL/O After reset, it is used as clock pin SCL of EEPROM. Its period is
longer than 10us. IP175C/IP175CH stops reading EEPROM if it
finds there is no 55AA pattern in address 0. After reading
EEPROM, this pin becomes an input pin.
IPH/O After reset, it is used as data pin SDA of EEPROM. After reading
EEPROM, this pin becomes an input pin. It is pulled up in
24C01A application circuit.
54
SDA
SMI
71, 70
MDC0, MDIO0
IPL
SMI0
The external MAC device uses the interface to access
IP175C/IP175CH’s MII registers.
IPL/O SMI1
IP175C/IP175CH uses the interface to polling the MII registers
of external PHY to get its status. It is active only if p4ext is pulled
high.
If the external PHY doesn’t support SMI, the polling result will be
16’hFFFF, and IP175C/IP175CH suppose the link status is
good.
113, 74
MDC1, MDIO1
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