lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 31

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

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
99
Note: Refer to
Direct Access
EEPROM I
EEPROM I
Input/Output
Size Strap 1
Data Output
Serial Clock
Serial Clock
Serial Data
Type Strap
Data FIFO
Data Input
Endianess
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
Microwire
Microwire
Microwire
NAME
NAME
Select
Select
the use of these signals.
2
2
C
C
Chapter 8, "Host Bus Interface (HBI)," on page 99
EEPROM_TYPE
Table 3.4 Host Bus Interface Pins (continued)
EEPROM_SIZE_1
FIFO_SEL
END_SEL
SYMBOL
SYMBOL
EE_SDA
EE_SCL
EECLK
EEDO
EEDI
Table 3.5 EEPROM Pins
DATASHEET
BUFFER
BUFFER
Note 3.3
Note 3.5
IS/OD8
IS/OD8
TYPE
TYPE
(PD)
O8
O8
IS
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.
EEPROM Microwire Data Output: In Microwire
EEPROM mode (EEPROM_TYPE = 0), this pin is
the Microwire EEPROM serial data output.
Note:
EEPROM Type Strap: Configures the EEPROM
type. See
0 = Microwire Mode
1 = I
EEPROM Microwire Serial Clock (EECLK): In
Microwire EEPROM mode (EEPROM_TYPE = 0),
this pin is the Microwire EEPROM clock output.
EEPROM I
EEPROM mode (EEPROM_TYPE=1), this pin is
the I
EEPROM Size Strap 1: Configures the high bit of
the EEPROM size range as specified in
10.2, "I2C/Microwire Master EEPROM Controller,"
on page
EEPROMs. See
2
2
C EEPROM clock input/open-drain output.
C Mode
137. This bit is not used for I
Section 14.1.3, "Direct FIFO Access
In I
is not used and is driven low.
Note 3.4
2
2
C Serial Data Input/Output
C Serial Clock (EE_SCL): In I
2
C mode (EEPROM_TYPE=1), this pin
2
C EEPROM mode
Note
for additional information regarding
DESCRIPTION
DESCRIPTION
for additional information.
3.4.
Revision 1.2 (04-08-08)
2
2
C EEPROM
C
Section
2
C