lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 141
lan9312
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.
Datasheet
1.LAN9312.pdf
(458 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
lan9312-NU
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
lan9312-NZW
Manufacturer:
Standard
Quantity:
143
Company:
Part Number:
lan9312-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
- Current page: 141 of 458
- Download datasheet (6Mb)
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
10.2.2.2
S 1 0 1 0
Control Byte
Chip / Block
EE_SDA
Select Bits
EE_SCL
Single Byte Addressing
A
1
0
Figure 10.2
I
The I
by the address byte or bytes. The control byte is preceded by a start condition. The control byte and
address byte(s) are each acknowledged by the EEPROM slave. If the EEPROM slave fails to send an
acknowledge, then the sequence is aborted and the EPC_TIMEOUT bit of the
Register (E2P_CMD)
The control byte consists of a 4-bit control code, 3-bits of chip/block select and one direction bit. The
control code is 1010b. For single byte addressing EEPROMs, the chip/block select bits are used for
address bits 10, 9, and 8. For double byte addressing EEPROMs, the chip/block select bits are set
low. The direction bit is set low to indicate the address is being written.
Figure 10.3
2
A
9
Start Condition
C EEPROM Device Addressing
A
8
2
0
R/~W
C EEPROM is addressed for a read or write operation by first sending a control byte followed
S
A
C
K
A
7
illustrates typical I
displays the various bus states of a typical I
A
6
Address Byte
A
5
change
data
can
A
4
A
3
is set.
A
2
Data Valid
or Ack
Figure 10.3 I
stable
A
1
data
A
0
A
C
K
2
C EEPROM addressing bit order for single and double byte addressing.
Figure 10.2 I
change
data
can
DATASHEET
S 1 0 1 0
2
C EEPROM Addressing
Condition
Control Byte
Re-Start
141
Chip / Block
Select Bits
Sr
2
C Cycle
0 0 0
change
data
0
can
R/~W
2
C
A
K
C cycle.
Double Byte Addressing
A
1
5
Data Valid
A
or Ack
1
4
Address High
stable
data
A
1
3
Byte
A
1
2
A
1
1
change
A
1
0
data
can
A
9
A
8
C
A
K
A
7
Stop Condition
EEPROM Command
Revision 1.2 (04-08-08)
A
6
Address Low
A
5
P
Byte
A
4
A
3
A
2
A
1
A
0
C
A
K
Related parts for lan9312
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Interface, Integrated USB2.0 Compatible 3-Port Hub
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Lan91c100fd Rev. B Feast Fast Ethernet Controller With Full Duplex Capability
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Feast ? Ast Ethernet Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Com20022i 10 Mbps Arcnet Ansi 878.1 Controller With 2k X 8 On-chip Ram
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Lpc47n207 Lpc Super I/o Irda Hot Docking Chip With Uart Data Brief
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Advanced I/o With X-bus Interface
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Fdc37m707 Enhanced Super I/o Controller With Wake-up Features
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Twenty Pin Uart Tpuart Corporation
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Enhanced Small Device Interface Controller
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Emc1001 1.5?c Smbus Temperature Sensor In Miniature Sot-23
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Beta Compensation And Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Multiple Temperature Sensor With Beta Compensation And Hottest Of Thermal Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Resistance Error Correction & Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet: