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參數資料
| 型號： | DS80C400-FNY |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 60/97頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 75MHZ 16MB HP 100-LQFP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS |
| 產品變化通告： | Product Discontinuation 20/Feb/2012 |
| 標準包裝： | 90 |
| 系列： | 80C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 75MHz |
| 連通性： | 1 線，CAN，EBI/EMI，以太網，SIO，UART/USART |
| 外圍設備： | 電源故障復位，WDT |
| 輸入/輸出數： | 64 |
| 程序存儲器容量： | 64KB（64K x 8） |
| 程序存儲器類型： | ROM |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.62 V ~ 3.6 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 100-LQFP |
| 包裝： | 托盤 |
| 配用： | DS80C400-KIT#-ND - EVAL KIT FOR DS80C400 |
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DS80C400 Network Microcontroller
63 of 97
Multicast Hash Filter
Hash filtering of destination addresses requires that a hash table be established. The hash table must be
programmed into the CSR multicast address low and multicast address high registers. When hash filtering has
been selected, the 6 bytes of the destination address are passed through the internal CRC-32 logic. The most
significant 6 bits of the resultant CRC-32 are used to index into the hash table. From those 6 bits, the most
significant bit determines whether multicast address high or low is used, while the lower 5 bits provide the bit index
into the selected CSR register. If the multicast address high or low register bit indexed by the upper 6 bits of the
CRC-32 is programmed to 1, then the destination address passes. Figure 8 shows the hash filtering process.
Figure 8. Hash Table Index Generation
VLAN Support
The DS80C400 offers VLAN support through recognition of frames that are tagged as such. Each VLAN tag
provides tag control information (TCI) containing a tag protocol ID (TPID) and VLAN ID. The incoming TPID occupy
the 13th and 14th byte positions, those that would normally contain either the length or type field for the frame. The
TPID is compared against the VLAN1 (20h) and VLAN2 (24h) CSR registers.
If a non-zero match occurs between the TPID and VLAN1 register setting, the frame is recognized as having a
VLAN1 tag. For VLAN1 tagged frames, the TPID is followed by 2 Bytes containing the VLAN ID; therefore, the
MAC extends the maximum legal frame length by a total of 4 Bytes (TPID = 2 Bytes, VLAN ID = 2 Bytes).
If a non-zero match occurs between the TPID and VLAN2 register setting, the frame is recognized as having a
VLAN2 tag. For VLAN2 tagged frames, the TPID is followed by 18 Bytes containing the VLAN ID; therefore, the
MAC extends the maximum legal frame length by a total of 20 Bytes (TPID = 2 Bytes, VLAN ID = 18 Bytes).
Figure 9. VLAN Tagged Frame
ETHERNET FRAME
CRC-32 OF DESTINATION ADDRESS BYTES
PREAMBLE SFD
DESTINATION ADDRESS
SOURCE ADDRESS
TYPE/LENGTH
DATA
CRC-32
CRC-32 GENERATOR
POLYNOMIAL
. . .
BIT INDEX
00000b: bit 0
00001b: bit 1
.
11110b: bit 30
11111b: bit 31
MULTICAST REGISTER SELECT
0: Multicast Address Low
1: Multicast Address High
TCI
ETHERNET FRAME
PREAMBLE SFD DESTINATION ADDRESS
SOURCE ADDRESS TYPE/LENGTH
DATA
CRC-32
(7)
(1)
(6)
(2)
(46-1500)
(4)
TPID
VLAN ID
(2)
(2: VLAN1)
(18: VLAN2)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS80C400-FNY+ | 功能描述:8位微控制器 -MCU Network MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| DS80C400-KIT | 功能描述:EVAL KIT FOR DS80C400 RoHS:否 類別:編程器，開發(fā)系統 >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:- 產品培訓模塊:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色產品:Blackfin? BF50x Series Processors 標準包裝:1 系列:Blackfin® 類型:DSP 適用于相關產品:ADSP-BF548 所含物品:板，軟件，4x4 鍵盤，光學撥輪，QVGA 觸摸屏 LCD 和 40G 硬盤 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相關產品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
| DS80C400-KIT# | 功能描述:開發(fā)板和工具包 - 8051 RoHS:否 制造商:Silicon Labs 產品:Development Kits 工具用于評估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓: |
| DS80C410 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Network Microcontrollers with Ethernet and CAN |
| DS80C410_09 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Network Microcontrollers with Ethernet and CAN |
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