LAN9312-NZW Standard Microsystems (SMSC), LAN9312-NZW Datasheet - Page 31

• Manufacturer Part Number: LAN9312-NZW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9312-NZW

• Lead Free Status / RoHS Status: Supplier Unconfirmed

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
PIN
PIN
60
61
96
98
Note: Refer to
Direct Access
EEPROM I
Input/Output
Data Output
Serial Data
Type Strap
Data FIFO
Endianess
Data Input
EEPROM
Microwire
EEPROM
Microwire
EEPROM
NAME
NAME
Select
Select
the use of these signals.
2
C
Chapter 8, "Host Bus Interface (HBI)," on page 99
EEPROM_TYPE
Table 3.4 Host Bus Interface Pins (continued)
FIFO_SEL
END_SEL
SYMBOL
SYMBOL
EE_SDA
EEDO
EEDI
Table 3.5 EEPROM Pins
DATASHEET
BUFFER
BUFFER
IS/OD8
Note 3.3
TYPE
TYPE
(PD)
O8
IS
IS
IS
IS
31
Data FIFO Direct Access Select: When driven
high, all accesses to the LAN9312 are directed to
the RX and TX Data FIFO’s. All reads are from the
RX Data FIFO, and all writes are to the TX Data
FIFO. In this mode, the address input is ignored.
Refer to
Mode," on page 167
Endianess Select: When this signal is set high,
big endian mode is selected. When low, little
endian mode is selected. This signal may be
dynamically changed or held static. Refer to
Chapter 8, "Host Bus Interface (HBI)," on page 99
for additional information.
EEPROM Microwire Data Input (EEDI): In
Microwire EEPROM mode (EEPROM_TYPE = 0),
this pin is the Microwire EEPROM serial data input.
EEPROM I
(EE_SDA): In I
(EEPROM_TYPE = 1), this pin is the I
serial data input/output.
Note:
EEPROM Microwire Data Output: In Microwire
EEPROM mode (EEPROM_TYPE = 0), this pin is
the Microwire EEPROM serial data output.
Note:
Note:
EEPROM Type Strap: Configures the EEPROM
type. See
0 = Microwire Mode
1 = I
Note:
2
C Mode
Section 14.1.3, "Direct FIFO Access
If I
required when using an EEPROM and is
recommended if no EEPROM is attached.
In I
is not used and is driven low.
When not using a Microwire or I
EEPROM, an external pull-down resistor
is recommended on this pin.
When not using a Microwire or I
EEPROM, an external pull-down resistor
is recommended on this pin.
Note 3.4
2
2
C Serial Data Input/Output
2
C is selected, an external pull-up is
C mode (EEPROM_TYPE=1), this pin
2
C EEPROM mode
for additional information regarding
DESCRIPTION
DESCRIPTION
for additional information.
Revision 1.7 (06-29-10)
2
C EEPROM
2
2
C
C