参数资料
型号: KSZ8995FQI
厂商: Micrel Inc
文件页数: 71/89页
文件大小: 0K
描述: IC SWITCH 10/100 5PORT 128-PQFP
标准包装: 66
系列: *
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-3872-ND - BOARD EVALUATION FOR KSZ8995FQ
其它名称: 576-3300
Micrel, Inc.
KS8995MA/FQ
October 2011
73
M9999-102611-3.0
MIB Counter Read Examples
(1) MIB counter read (read port 1 rx 64 counter)
Write to Register 110 with 0x1c (read MIB counters selected)
Write to Register 111 with 0xe (trigger the read operation)
Then,
Read Register 117 (counter value 31-24)
// If bit 31 = 1, there was a counter overflow
// If bit 30 = 0, restart (reread) from this register
Read Register 118 (counter value 23-16)
Read Register 119 (counter value 15-8)
Read Register 120 (counter value 7-0)
(2) MIB counter read (read port 2 rx 64 counter)
Write to Register 110 with 0x1c (read MIB counter selected)
Write to Register 111 with 0x2e (trigger the read operation)
Then,
Read Register 117 (counter value 31-24)
//If bit 31 = 1, there was a counter overflow
//If bit 30 = 0, restart (reread) from this register
Read Register 118 (counter value 23-16)
Read Register 119 (counter value 15-8)
Read Register 120 (counter value 7-0)
(3) MIB counter read (read port 1 tx drop packets)
Write to Register 110 with 0x1d
Write to Register 111 with 0x00
Then,
Read Register 119 (counter value 15-8)
Read Register 120 (counter value 7-0)
Note:
To read out all the counters, the best performance over the SPI bus is (160+3) × 8 × 200 = 260ms, where there are 160 registers, 3 overhead, 8 clocks
per access, at 5MHz. In the heaviest condition, the byte counter will overflow in 2 minutes. It is recommended that the software read all the counters at
least every 30 seconds. The per port MIB counters are designed as “read clear.” A per port MIB counter will be cleared after it is accessed. All port
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.
相关PDF资料
PDF描述
AD9970BCPZ IC PROCESSOR CCD SIGNAL 32LFCSP
ADP5587ACPZ-R7 IC EXPANDER/KEYBOARD CTRLR
LFXP3E-4TN144C IC FPGA 3.1KLUTS 100I/O 144-TQFP
LFXP3C-4TN144C IC FPGA 3.1KLUTS 100I/O 144-TQFP
FMC15DRYN-S93 CONN EDGECARD 30POS .100 DIP SLD
相关代理商/技术参数
参数描述
KSZ8995M 功能描述:以太网 IC 5 Port 10/100 Switch with PHY and Frame Buffers (Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8995MA 功能描述:以太网 IC 5 Port 10/100 Switch with PHY and Frame Buffers (Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8995MA4 功能描述:IC SWITCH 5-PORT 10/100 128PQFP RoHS:是 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA(27x27) 包装:散装
KSZ8995MAB3 功能描述:IC SWITCH 5-PORT 10/100 128PQFP RoHS:是 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA(27x27) 包装:散装
KSZ8995MA-EVAL 功能描述:以太网开发工具 KSZ8995MA Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: