LAN9730 Datasheet, PDF (18/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
TABLE 2-2: EEPROM PINS
Num Pins
Name
Symbol
1
EEPROM
Data In
EEDI
1
EEPROM
EEDO
Data Out
Auto-MDIX
Enable Con-
figuration
Strap
AUTOMDIX_EN
1
EEPROM
EECS
Chip Select
1
EEPROM
EECLK
Clock
Buffer
Type
IS
(PD)
O8
(PU)
IS
(PU)
O8
O8
(PD)
Description
This pin is driven by the EEDO output of the
external EEPROM.
This pin drives the EEDI input of the external
EEPROM.
Determines the default Auto-MDIX setting.
0 = Auto-MDIX is disabled.
1 = Auto-MDIX is enabled.
See Note 2-1 for more information on configura-
tion straps.
This pin drives the chip select output of the exter-
nal EEPROM.
Note:
The EECS output may tri-state briefly
during power-up. Some EEPROM
devices may be prone to false selection
during this time. When an EEPROM is
used, an external pull-down resistor is
recommended on this signal to prevent
false selection. Refer to your EEPROM
manufacturer’s datasheet for additional
information.
This pin drives the EEPROM clock of the external
EEPROM.
Note: This pin must be pulled-up externally for
proper operation.
Note 2-1
Configuration strap values are latched on Power on Reset (POR) or External Chip Reset (nRESET).
Configuration straps are identified by an underlined symbol name. Pins that function as configuration
straps must be augmented with an external resistor when connected to a load. Refer to Section 4.14,
"Configuration Straps" for additional information.
DS00001946A-page 18
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