KS8993F-A1 Micrel Inc, KS8993F-A1 Datasheet - Page 85

• Manufacturer Part Number: KS8993F-A1
• Description: IC CONV MED 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8993F-A1

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• For Use With: KS8993F-EVAL - EVAL KIT EXPERIMENTAL KS8993F
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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.
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