KSZ8842-16MVL TR Micrel, KSZ8842-16MVL TR Datasheet - Page 118
KSZ8842-16MVL TR
Manufacturer Part Number
KSZ8842-16MVL TR
Description
Ethernet ICs 2-Port Ethernet Switch/Repeater + Generic (8, 16-bit) bus interface(Lead Free)
Manufacturer
Micrel
Datasheet
1.KSZ8842-16MVL_TR.pdf
(141 pages)
Specifications of KSZ8842-16MVL TR
Rohs
yes
Product
Ethernet Switches
Package / Case
PQFP-128
Mounting Style
SMD/SMT
- Current page: 118 of 141
- Download datasheet (765Kb)
Examples:
Additional MIB Information
Per Port MIB counters are designed as “read clear”. That is, these counters will be cleared after they are read.
All Ports Dropped Packet MIB counters are not cleared after they are accessed. The application needs to keep track of
overflow and valid conditions on these counters.
Micrel, Inc.
October 2007
1. MIB Counter Read (read port 1 “Rx64Octets” counter at indirect address offset 0x0E)
Then
2. MIB Counter Read (read port 2 “Rx64Octets” counter at indirect address offset 0x2E)
Then
3. MIB Counter Read (read “Port1 TX Drop Packets” counter at indirect address offset 0x100)
Then
Write to reg. IACR with 0x1c0e (set indirect address and trigger a read MIB counters operation)
Read reg. IADR5 (MIB counter value 31-16) // If bit 31 = 1, there was a counter overflow
Read reg. IADR4 (MIB counter value 15-0)
Write to reg. IACR with 0x1c2e (set indirect address and trigger a read MIB counters operation)
Read reg. IADR5 (MIB counter value 31-16) // If bit 31 = 1, there was a counter overflow
Read reg. IADR4 (MIB counter value 15-0)
Write to reg. IACR with 0x1d00 (set indirect address and trigger a read MIB counters operation)
Read reg. IADR4 (MIB counter value 15-0)
118
// If bit 30 = 0, restart (reread) from this register
// If bit 30 = 0, restart (reread) from this register
KSZ8842-16/32 MQL/MVL/MVLI/MBL
M9999-102207-1.9
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