参数资料
型号: PIC16LC642T-04/SO
厂商: Microchip Technology
文件页数: 6/125页
文件大小: 0K
描述: IC MCU OTP 4KX14 COMP 28SOIC
标准包装: 1,600
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
外围设备: 欠压检测/复位,LED,POR,WDT
输入/输出数: 22
程序存储器容量: 7KB(4K x 14)
程序存储器类型: OTP
RAM 容量: 176 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 6 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
Micrel, Inc.
KSZ8862-16/32MQL
April 2007
103
M9999-040407-3.0
MIB (Management Information Base) Counters
The KSZ8862M provides 34 MIB counters for each port. These counters are used to monitor the port activity for network
management. The MIB counters are formatted “per port” as shown in Table 14 and “all ports dropped packet” as shown in
Table 16.
Bit
Name
R/W
Description
Default
31
Overflow
RO
1: counter overflow.
0: no counter overflow.
0
30
Count valid
RO
1: counter value is valid.
0: counter value is not valid.
0
29-0
Counter values
RO
Counter value (read clear)
0x00000000
Table 14. Format of Per Port MIB Counters
“Per Port” MIB counters are read using indirect memory access. The base address offsets and address ranges for both
Ethernet ports are:
Port 1, base address is 0x00 and range is from 0x00 to 0x1f.
Port 2, base address is 0x20 and range is from 0x20 to 0x3f.
Per port MIB counters are read using indirect access control register in IACR, Bank 42 (0x00) and indirect access data
registers in IADR4[15:0], IADR5[31:16]. Table 15 shows the port 1 MIB counters address memory offset.
Offset
Counter Name
Description
0x0
RxLoPriorityByte
Rx lo-priority (default) octet count including bad packets
0x1
RxHiPriorityByte
Rx hi-priority octet count including bad packets
0x2
RxUndersizePkt
Rx undersize packets w/ good CRC
0x3
RxFragments
Rx fragment packets w/ bad CRC, symbol errors or alignment errors
0x4
RxOversize
Rx oversize packets w/ good CRC (max: 1536 or 1522 bytes)
0x5
RxJabbers
Rx packets longer than 1522 bytes w/ either CRC errors, alignment errors, or symbol
errors (depends on max packet size setting)
0x6
RxSymbolError
Rx packets w/ invalid data symbol and legal packet size.
0x7
RxCRCError
Rx packets within (64,1522) bytes w/ an integral number of bytes and a bad CRC
(upper limit depends on max packet size setting)
0x8
RxAlignmentError
Rx packets within (64,1522) bytes w/ a non-integral number of bytes and a bad CRC
(upper limit depends on max packet size setting)
0x9
RxControl8808Pkts
Number of MAC control frames received by a port with 88-08h in EtherType field
0xA
RxPausePkts
Number of PAUSE frames received by a port. PAUSE frame is qualified with EtherType
(88-08h), DA, control opcode (00-01), data length (64B min), and a valid CRC
0xB
RxBroadcast
Rx good broadcast packets (not including error broadcast packets or valid multicast
packets)
0xC
RxMulticast
Rx good multicast packets (not including MAC control frames, error multicast packets
or valid broadcast packets)
0xD
RxUnicast
Rx good unicast packets
0xE
Rx64Octets
Total Rx packets (bad packets included) that were 64 octets in length
0xF
Rx65to127Octets
Total Rx packets (bad packets included) that are between 65 and 127 octets in length
0x10
Rx128to255Octets
Total Rx packets (bad packets included) that are between 128 and 255 octets in length
0x11
Rx256to511Octets
Total Rx packets (bad packets included) that are between 256 and 511 octets in length
0x12
Rx512to1023Octets
Total Rx packets (bad packets included) that are between 512 and 1023 octets in length
0x13
Rx1024to1522Octets
Total Rx packets (bad packets included) that are between 1024 and 1522 octets in
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