LAN9353 Datasheet, PDF (32/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
Note 11: An external supplemental pull-up may be needed, depending upon the input current loading of the external
MAC/PHY device.
TABLE 3-8: I²C MANAGEMENT PIN DESCRIPTIONS
Num
Pins
1
Name
I²C Slave
Serial Data
Input/Output
1
I²C Slave
Serial Clock
Symbol
I2CSDA
I2CSCL
Buffer
Type
VIS/VOD8
VIS
Description
This pin is the I²C serial data input/output from/to
the external master
Note: This pin must be pulled-up by an exter-
nal resistor at all times.
This pin is the I²C clock input from the external mas-
ter.
Note:
These signals are not driven (high
impedance) until the EEPROM is
loaded.
TABLE 3-9: EEPROM PIN DESCRIPTIONS
Num
Pins
Name
EEPROM I²C
1
Serial Data
Input/Output
1
EEPROM I²C
Serial Clock
Symbol
EESDA
EESCL
Buffer
Type
Description
VIS/VOD8
When the device is accessing an external EEPROM
this pin is the I²C serial data input/open-drain out-
put.
Note: This pin must be pulled-up by an exter-
nal resistor at all times.
VIS/VOD8
When the device is accessing an external EEPROM
this pin is the I²C clock input/open-drain output.
Note: This pin must be pulled-up by an exter-
nal resistor at all times.
TABLE 3-10: GPIO, LED & CONFIGURATION STRAP PIN DESCRIPTIONS
Num
Pins
Name
1
General
Purpose I/O 7
1
General
Purpose I/O 6
Symbol
GPIO7
GPIO6
Buffer
Type
Description
This pin is configured to operate as a GPIO. The pin
VIS/VO12/
VOD12
(PU)
is fully programmable as either a push-pull output,
an open-drain output or a Schmitt-triggered input by
writing the General Purpose I/O Configuration Reg-
ister (GPIO_CFG) and the General Purpose I/O
Data & Direction Register (GPIO_DATA_DIR).
This pin is configured to operate as a GPIO. The pin
VIS/VO12/
VOD12
(PU)
is fully programmable as either a push-pull output,
an open-drain output or a Schmitt-triggered input by
writing the General Purpose I/O Configuration Reg-
ister (GPIO_CFG) and the General Purpose I/O
Data & Direction Register (GPIO_DATA_DIR).
DS00001925A-page 32
 2015 Microchip Technology Inc.