lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 37
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: 37 of 458
- Download datasheet (6Mb)
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
4.2.1
4.2.1.1
RESET SOURCE
Digital Reset
Virtual PHY
Port 2 PHY
Port 1 PHY
Soft Reset
nRST Pin
Note 4.1
Chip-Level Resets
A chip-level reset event activates all internal resets, effectively resetting the entire LAN9312.
Configuration straps are latched, and the EEPROM Loader is run as a result of chip-level resets. A
chip-level reset is initiated by assertion of any of the following input events:
Chip-level reset completion/configuration can be determined by polling the READY bit of the
Configuration Register (HW_CFG)
When set, the READY bit indicates that the reset has completed and the device is ready to be
accessed.
With the exception of the
Register
(RESET_CTL), read access to any internal resources is forbidden while the READY bit is cleared.
Writes to any address are invalid until the READY bit is set.
Note: The LAN9312 must be read at least once after any chip-level reset to ensure that write
Power-On Reset (POR)
A power-on reset occurs whenever power is initially applied to the LAN9312, or if the power is removed
and reapplied to the LAN9312. This event resets all circuitry within the device. Configuration straps
are latched, and the EEPROM Loader is run as a result of this reset.
Power-On Reset (POR)
nRST Pin Reset
POR
operations function properly.
(PMT_CTRL),
In the case of a soft reset, the EEPROM Loader is run, but loads only the MAC address
into the Host MAC. No other values are loaded by the EEPROM Loader in this case.
X
X
X
Table 4.1 Reset Sources and Affected LAN9312 Circuitry
X
X
X
Byte Order Test Register
Hardware Configuration Register
X
X
X
or
DATASHEET
X
X
X
X
X
Power Management Control Register (PMT_CTRL)
37
X
X
X
X
X
X
X
X
(BYTE_TEST), and
(HW_CFG),
X
X
X
X
X
X
Power Management Control
Reset Control Register
X
X
X
Revision 1.2 (04-08-08)
X
X
until it is set.
Note 4.1
Hardware
X
X
X
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: