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參數(shù)資料
| 型號(hào)： | DS80C400-FNY |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 61/97頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 75MHZ 16MB HP 100-LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS |
| 產(chǎn)品變化通告： | Product Discontinuation 20/Feb/2012 |
| 標(biāo)準(zhǔn)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(wǎng)，SIO，UART/USART |
| 外圍設(shè)備： | 電源故障復(fù)位，WDT |
| 輸入/輸出數(shù)： | 64 |
| 程序存儲(chǔ)器容量： | 64KB（64K x 8） |
| 程序存儲(chǔ)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
64 of 97
Transmit/Receive Packet Buffer Memory (8kB)
The DS80C400 Ethernet controller uses 8kB of internal SRAM as transmit/receive packet buffer memory. This
SRAM is read/write accessible as data memory by the CPU using the MOVX instruction. The BCU also has access
to this SRAM, and automatically writes/reads packet buffer memory whenever it needs to store or retrieve Ethernet
packet information. The logical MOVX address range of the 8kB SRAM is determined by the IDM1:0 bits of the
MCON (C6h) SFR. Table 16 shows the available address range settings.
When used for Ethernet packet buffer memory, the 8kB SRAM is logically configured into (32) pages of 64 words
each, where a word consists of 4 Bytes. These 32 pages can be dynamically allocated between Ethernet transmit
and receive buffer memory. The five least significant bits of the Ethernet buffer size (EBS; E5h) SFR specify how
many pages are allocated for receive buffer memory. The remaining pages of the 32 are used as transmit buffer
memory. Note that transmit and receive data packets can span multiple pages. The reset default state of the
Ethernet buffer size select bits (EBS.4–EBS.0) is 00000b, which configures all 32 pages as transmit buffer
memory. As an example, setting EBS.4–EBS.0 = 10000b would result in pages 0–15 (16 pages) being configured
as receive buffer memory and pages 16–31 (16 pages) being configured as transmit buffer memory. A setting of
11111b leaves a single page (page 31) for transmit buffer memory and configures pages 0–30 (31 pages) as
receive buffer memory. Changing the transmit/receive buffer-size settings flush the contents of the receive buffer
and the receive FIFO. Figure 10 is an illustration of the 8kB buffer memory map and addressing scheme.
Table 16. Packet Buffer Memory Location
IDM1:0
(MCON.7, MCON.6)
INTERNAL 8kB SRAM LOCATION
(ETHERNET PACKET BUFFER MEMORY)
00
00E000h–00FFFFh
01
000000h–001FFFh
10
FFE000h–FFFFFFh
11
Reserved
Figure 10. Transmit/Receive Data Buffer Memory
EXAMPLE: PAGE 1, WORD 2, BYTE 3
WORD 2
WORD 63
.
STATUS WORD (WORD 0)
WORD 1
.
PAGE 31
PAGE (n - 2)
PAGE (n - 1)
PAGE n
PAGE 0
PAGE 1
RECEIVE
BUFFER
(n PAGES)
TRANSMIT
BUFFER
(32 - n PAGES)
BUFFER SIZE
SETTING
(EBS.4–EBS.0)
(Per IDM1:0)
PAGE
WORD
BYTE
8kB INTERNAL SRAM
PAGE 1
xxxxxxxx xxx
00001
000010
11
BUFFER MEMORY ADDRESS (24-Bit)
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相關(guān)代理商/技術(shù)參數(shù) |
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| 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(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)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(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:- 產(chǎn)品培訓(xùn)模塊:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色產(chǎn)品:Blackfin? BF50x Series Processors 標(biāo)準(zhǔn)包裝:1 系列:Blackfin® 類型:DSP 適用于相關(guān)產(chǎn)品:ADSP-BF548 所含物品:板，軟件，4x4 鍵盤，光學(xué)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(guān)產(chǎn)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(chǎn)品:Development Kits 工具用于評(píng)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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