KS8993F A5 Micrel Inc, KS8993F A5 Datasheet - Page 85
KS8993F A5
Manufacturer Part Number
KS8993F A5
Description
Manufacturer
Micrel Inc
Datasheet
1.KS8993F_A5.pdf
(99 pages)
Specifications of KS8993F A5
Number Of Primary Switch Ports
3
Internal Memory Buffer Size
32
Operating Supply Voltage (typ)
1.8/2.5/3.3V
Fiber Support
Yes
Integrated Led Drivers
Yes
Phy/transceiver Interface
MII/SNI
Power Supply Type
Analog/Digital
Package Type
PQFP
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)
1.89/3.465V
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Not Compliant
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KS8993F
NOTES:
August 26, 2004
1. Both “Per Port” and “All Port Dropped Packet” MIB Counters do not indicate overflow. The application must
2. “All Port Dropped Packet” MIB Counters do not indicate if count is valid. The application must keep track of
3. To read out all the counters, the best performance over the SPI bus is (160+3)*8*200 = 260 ms, where there
4. A high performance SPI master is recommended to prevent counters overflow.
5. “Per Port” MIB Counters are designed as “read clear”. These counters will be cleared after they are read.
6. “All Port Dropped Packet” MIB counters are not cleared after they are read.
Read reg. 120 (counter value 7-0)
keep track of overflow conditions for these counters.
valid conditions for these counters.
are 160 registers, 3 overheads, 8 clocks per access, at 5 MHz. In the heaviest condition, the counters will
overflow in 2 minutes. It is recommended that the software read all the counters at least every 30 seconds.
- 85 -
Revision 1.0
Micrel
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