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LAN9117 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 10 Page - Microchip Technology

๋ถ€ํ’ˆ๋ช… LAN9117
์ƒ์„ธ๋‚ด์šฉ  High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
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LAN9117 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 10 Page - Microchip Technology

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LAN9117
DS00002267A-page 10
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TABLE 2-4:
SERIAL EEPROM INTERFACE SIGNALS
Pin No.
Name
Symbol
Buffer
Type
# Pins
Description
67
EEPROM Data,
GPO3, TX_EN,
TX_CLK
EEDIO/GPO3/
TX_EN/TX_CLK
I/O8
1
EEPROM Data: This bi-directional pin
can be connected to a serial
EEPROM DIO. This is optional.
General Purpose Output 3: This pin
can also function as a general
purpose output, or it can be
configured to monitor the TX_EN or
TX_CLK signals on the internal MII
port. When configured as a GPO
signal, or as a TX_EN/TX_CLK
monitor, the EECS pin is deasserted
so as to never unintentionally access
the serial EEPROM. This signal
cannot function as a general-purpose
input.
68
EEPROM Chip
Select
EECS
O8
1
Serial EEPROM chip select.
69
EEPROM Clock,
GPO4 RX_DV,
RX_CLK
EECLK/GPO4/
RX_DV/RX_CLK
O8
1
EEPROM Clock: Serial EEPROM
Clock pin.
General Purpose Output 4: This pin
can also function as a general-
purpose output, or it can be
configured to monitor the RX_DV or
RX_CLK signals on the internal MII
port. When configured as a GPO
signal, or as an RX_DV/RX_CLK
monitor, the EECS pin is deasserted
so as to never unintentionally access
the serial EEPROM. This signal
cannot function as a general-purpose
input.
Note:
When the EEPROM inter-
face
is
not
used,
the
EECLK pin must be left
unconnected.
TABLE 2-5:
SYSTEM AND POWER SIGNALS
Pin No.
Name
Symbol
Buffer
Type
# Pins
Description
6
Crystal 1
XTAL1
lclk
1
External 25MHz Crystal Input.
Can also be connected to single-ended
TTL oscillator. If this method is
implemented, XTAL2 should be left
unconnected.
5
Crystal 2
XTAL2
Oclk
1
External 25MHz Crystal output.


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