LAN9311-NZW Standard Microsystems (SMSC), LAN9311-NZW Datasheet - Page 269

• Manufacturer Part Number: LAN9311-NZW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9311-NZW

• Number Of Primary Switch Ports: 2
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 3.3V
• Fiber Support: No
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII
• Power Supply Type: Analog
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Operating Temperature Classification: Commercial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Compliant

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
14.2.9.7
BITS
31:0
Free Running Counter (FR_CNT)
This field reflects the current value of the free-running 32-bit counter. At
reset, the counter starts at zero and is incremented by one every 25MHz
cycle. When the maximum count has been reached, the counter will rollover
to zero and continue counting.
Note:
Note:
Free Running 25MHz Counter Register (FREE_RUN)
This read-only register reflects the current value of the free-running 25MHz counter. Refer to
12.2, "Free-Running Clock," on page 162
The count value is latched on the first read. This eliminates
erroneous readings of the full free running counter value.
The free running counter can take up to 160nS to clear after a reset
event.
Offset:
09Ch
DESCRIPTION
DATASHEET
for additional information.
269
Size:
32 bits
TYPE
RO
Revision 1.7 (06-29-10)
00000000h
DEFAULT
Section