LAN9303-ABZJ SMSC, LAN9303-ABZJ Datasheet - Page 87
LAN9303-ABZJ
Manufacturer Part Number
LAN9303-ABZJ
Description
IC ETHER SW 3PORT 16BIT 56QFN
Manufacturer
SMSC
Specifications of LAN9303-ABZJ
Controller Type
Ethernet Switch Controller
Interface
SMBus (2-Wire/I²C)
Voltage - Supply
3 V ~ 3.6 V
Current - Supply
190mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-QFN
Product
Ethernet Switches
Standard Supported
Yes
Data Rate
10 Mbps/100 Mbps
Supply Voltage (max)
3.6 V
Supply Voltage (min)
3 V
Supply Current (max)
0.19 A (Typ)
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
For Use With
638-1095 - EVALUATION BOARD FOR LAN9303
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
638-1082
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LAN9303-ABZJ
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
SMSC LAN9303/LAN9303i
6.5.7
6.6
Counters
A counter is maintained per port that contains the number of packets dropped due to buffer space limits
and ingress rate limit discarding (Red and random Yellow dropping). These counters are accessible
via the following registers:
A counter is maintained per port that contains the number of packets dropped due solely to ingress
rate limit discarding (Red and random Yellow dropping). This count value can be subtracted from the
drop counter, as described above, to obtain the drop counts due solely to buffer space limits. The
ingress rate drop counters are accessible via the following registers:
The Switch Fabric is capable of generating multiple maskable interrupts from the Buffer Manager,
Switch Engine, and MACs. These interrupts are detailed in
on page
Switch Fabric Interrupts
Buffer Manager Port 0 Drop Count Register (BM_DRP_CNT_SRC_0)
Buffer Manager Port 1 Drop Count Register (BM_DRP_CNT_SRC_1)
Buffer Manager Port 2 Drop Count Register (BM_DRP_CNT_SRC_2)
Buffer Manager Port 0 Ingress Rate Drop Count Register (BM_RATE_DRP_CNT_SRC_0)
Buffer Manager Port 1 Ingress Rate Drop Count Register (BM_RATE_DRP_CNT_SRC_1)
Buffer Manager Port 2 Ingress Rate Drop Count Register (BM_RATE_DRP_CNT_SRC_2)
57.
DATASHEET
87
Section 5.2.1, "Switch Fabric Interrupts,"
Revision 1.4 (07-07-10)
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