Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
Note 3.9 Configuration strap values are latched on power-on reset or nRST de-assertion.
Configuration strap pins are identified by an underlined symbol name. Some configuration
straps can be overridden by values from the EEPROM Loader. Refer to Section 4.2.4,
"Configuration Straps," on page 45 for more information.
Note 3.10 In MAC mode, this strap is not used. In this mode, the Virtual PHY is not applicable, and
full-duplex flow control must be controlled manually by the host, based upon the external
PHYs Auto-negotiation results.
Table 3.6 EEPROM Pins
BUFFER
PIN
NAME
SYMBOL
TYPE
DESCRIPTION
EEPROM
Microwire
Data Input
EEDI
IS
(PD)
EEPROM Microwire Data Input (EEDI): In
Microwire EEPROM mode (EEPROM_TYPE = 0),
this pin is the Microwire EEPROM serial data input.
96
EEPROM I2C
Serial Data
Input/Output
EE_SDA
EEDO
IS/OD8
O8
EEPROM I2C Serial Data Input/Output
(EE_SDA): In I2C EEPROM mode
(EEPROM_TYPE = 1), this pin is the I2C EEPROM
serial data input/output.
EEPROM
Microwire
Data Output
EEPROM Microwire Data Output: In Microwire
EEPROM mode (EEPROM_TYPE = 0), this pin is
the Microwire EEPROM serial data output.
Note:
In I2C mode (EEPROM_TYPE=1), this pin
is not used and is driven low.
98
EEPROM_TYPE
EECLK
EEPROM
Type Strap
IS
EEPROM Type Strap: Configures the EEPROM
type. See Note 3.12
Note 3.11
0 = Microwire Mode
1 = I2C Mode
EEPROM
Microwire
Serial Clock
O8
EEPROM Microwire Serial Clock (EECLK): In
Microwire EEPROM mode (EEPROM_TYPE = 0),
this pin is the Microwire EEPROM clock output.
EEPROM I2C
Serial Clock
EE_SCL
IS/OD8
EEPROM I2C Serial Clock (EE_SCL): In I2C
EEPROM mode (EEPROM_TYPE=1), this pin is
the I2C EEPROM clock input/open-drain output.
99
EEPROM_SIZE_1
EEPROM
Size Strap 1
IS
EEPROM Size Strap 1: Configures the high bit of
the EEPROM size range as specified in Section
8.2, "I2C/Microwire Master EEPROM Controller,"
on page 101. This bit is not used for I2C
EEPROMs. See Note 3.12.
Note 3.13
EEPROM
Microwire
Chip Select
EECS
O8
EEPROM Microwire Chip Select: In Microwire
EEPROM mode (EEPROM_TYPE = 0), this pin is
the Microwire EEPROM chip select output.
Note:
In I2C mode (EEPROM_TYPE=1), this pin
is not used and is driven low.
101
EEPROM_SIZE_0
EEPROM
Size Strap 0
IS
Note 3.11
EEPROM Size Strap 0: Configures the low bit of
the EEPROM size range as specified in Section
8.2, "I2C/Microwire Master EEPROM Controller,"
on page 101. See Note 3.12.
Note 3.11 The IS buffer type is valid only during the time specified in Section 14.5.2, "Reset and
Configuration Strap Timing," on page 390.
Note 3.12 Configuration strap values are latched on power-on reset or nRST de-assertion.
Configuration strap pins are identified by an underlined symbol name. Refer to Section
4.2.4, "Configuration Straps," on page 45 for more information.
SMSC LAN9313/LAN9313i
Revision 1.2 (04-08-08)
DATA3S7HEET
SMSC [ SMSC CORPORATION ]
