参数资料
型号: KSZ8842-16MQL
厂商: Micrel Inc
文件页数: 22/141页
文件大小: 0K
描述: IC SWITCH 10/100 16BIT 128PQFP
标准包装: 66
控制器类型: 以太网开关控制器
接口: PCI
电源电压: 3.1 V ~ 3.5 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-BFQFP
供应商设备封装: 128-PQFP(14x20)
包装: 管件
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-1634-ND - BOARD EVALUATION KSZ8842-16MQL
其它名称: 576-1478-5
Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
October 2007
118
M9999-102207-1.9
Examples:
1. MIB Counter Read (read port 1 “Rx64Octets” counter at indirect address offset 0x0E)
Write to reg. IACR with 0x1c0e (set indirect address and trigger a read MIB counters operation)
Then
Read reg. IADR5 (MIB counter value 31-16) // If bit 31 = 1, there was a counter overflow
// If bit 30 = 0, restart (reread) from this register
Read reg. IADR4 (MIB counter value 15-0)
2. MIB Counter Read (read port 2 “Rx64Octets” counter at indirect address offset 0x2E)
Write to reg. IACR with 0x1c2e (set indirect address and trigger a read MIB counters operation)
Then
Read reg. IADR5 (MIB counter value 31-16) // If bit 31 = 1, there was a counter overflow
// If bit 30 = 0, restart (reread) from this register
Read reg. IADR4 (MIB counter value 15-0)
3. MIB Counter Read (read “Port1 TX Drop Packets” counter at indirect address offset 0x100)
Write to reg. IACR with 0x1d00 (set indirect address and trigger a read MIB counters operation)
Then
Read reg. IADR4 (MIB counter value 15-0)
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.
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