- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16209 > POE-VOICE-RD (Silicon Laboratories Inc)KIT REF DESIGN PWR OVER ETHERNET PDF資料下載
參數(shù)資料
| 型號(hào)： | POE-VOICE-RD |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 52/108頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT REF DESIGN PWR OVER ETHERNET |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 參考設(shè)計(jì)，以太網(wǎng)供電（POE），語音傳輸 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | C8051F340，CP2201，Si3400 |
| 主要屬性： | 嵌入式以太網(wǎng)，以太網(wǎng)供電，8 kHz 語音采樣系統(tǒng) |
| 次要屬性： | 圖形用戶界面 |
| 已供物品： | 板，線纜，電源，軟件 |
| 產(chǎn)品目錄頁面： | 626 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | 336-1385-ND - IC POWER OVER ETHERNET 20QFN 336-1322-ND - IC POWER OVER ETHERNET 20QFN 336-1313-ND - IC ETH CTRLR SNGL-CHIP 28QFN 336-1298-ND - IC 8051 MCU FLASH 64K 48TQFP |
| 其它名稱： | 336-1326 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁當(dāng)前第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁
CP2200/1
48
Rev. 1.0
11.2. Transmitting a Packet
Once reset initialization is complete (See ), the CP2200/1 is ready to transmit Ethernet packets. The following
procedure can be used to transmit a packet:
Step 1: Wait for the previous packet to complete (TXBUSY == 0x00). The worst case time to transmit a
packet is 500 ms in half-duplex mode with exponential backoff.
Step 2: Set the TXSTARTH:TXSTARTL transmit buffer pointer to 0x0000.
Step 3: If the last packet was aborted ((TXSTA3 & 0xF8) != 0x00), then this packet must be loaded into the
transmit buffer using the Random Memory Access Method:
a. Set RAMADDRH:RAMADDRL to 0x0000.
b. Write the first data byte to RAMTXDATA.
c. Increment RAMADDRH:RAMADDRL.
d. Write another data byte to RAMTXDATA.
e. Repeat steps c and d until the entire packet is loaded.
f. Pad small packets to at least 64 bytes.
g. Set TXENDH:TXENDL to the address of the last byte added. This value must be greater than or
equal to 0x0040.
Step 4: If the last packet was successfully transmitted ((TXSTA2 & 0x80) == 0x80), then this packet may be
loaded into the transmit buffer using the AutoWrite Interface:
a. Write all data bytes to the TXAUTOWR register, one byte at time.
b. If the MAC is in half-duplex mode, pad small packets to at least 64 bytes.
Step 5: Set the TXSTARTH:TXSTARTL transmit buffer pointer back to 0x0000.
Step 6: Write a ‘1’ to the TXGO bit (TXCN.0) to begin transmission.
Note: Step 4 may be skipped if Step 3 is always performed.
11.3. Overriding Transmit Configuration Options
The global transmit configuration options are set in the MAC registers. The transmit interface allows the host
processor to customize packet transmission on a per-packet basis by overriding the global MAC settings. The
following options can be overridden by the transmit interface:
Short Frame Padding—When enabled, ensures that no frame smaller than 64 bytes is transmitted. The frame
size does not include the 8 byte preamble; however, the 4-byte CRC field is included.
CRC Generation—When enabled, a 32-bit CRC will be calculated and appended to the Ethernet frame.
Pause packet transmission (Full Duplex Mode)—When enabled, an Ethernet PAUSE packet with a pause value
of TXPAUSEH:TXPAUSEL is transmitted. The pause value is in units of 512 bit times (51.2 s).
Application of Back Pressure (Half Duplex Mode).
Switching between Half/Full Duplex Modes. Note: This setting does not affect the physical layer.
11.4. Transmit Buffer and AutoWrite Interface
The transmit buffer provides the AutoWrite interface to efficiently load the buffer with an entire packet. The interface
consists of three registers: TXSTART, TXEND, and TXAUTOWR. The TXSTART register points to the address of
the next available byte and can be reset to the first byte of the buffer. TXEND points to the last byte added to the
buffer. TXAUTOWR is the data register. Each write to TXAUTOWR sets TXEND to the address of the byte written
and increments TXSTART. After the packet is loaded into the buffer, TXSTART is reset to 0x0000 to mark the
starting point of the packet. TXEND will continue to point to the last byte in the packet.
Note: The AutoWrite Interface cannot be used following an aborted packet. This only applies if the device is in half-duplex
mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CW252016-R10G | INDUCTOR 100NH 1008 SMD |
| GBA31DCBI | CONN EDGECARD 62POS R/A .125 SLD |
| EBC18DRTH-S93 | CONN EDGECARD 36POS DIP .100 SLD |
| ABM10DSUH | CONN EDGECARD 20POS .156 DIP SLD |
| UPZ2D331MHD6 | CAP ALUM 330UF 200V 20% RADIAL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| POF 1200AE | 制造商:Bosch Sensortec 功能描述:ROUTER 1200W |
| POF 1400ACE | 制造商:Bosch Sensortec 功能描述:ROUTER, 1400W |
| POF-12664 | 功能描述:PUSH-ON FEET BLK .62 X .20" RoHS:是 類別:硬件，緊固件，配件 >> 緩沖器，支腳，焊盤，握把 系列:POF MSDS 材料安全數(shù)據(jù)表:MB1102,1200, SJ5300,5400,5600,5900,6000 MSDS 產(chǎn)品目錄繪圖:Resilient Rollstock 標(biāo)準(zhǔn)包裝:1 系列:SJ-5900 形狀:矩形，扁平 - 可定制 顏色:黑 尺寸:卷 - 1' L x 9.000" W x 0.250" H（304.80mm x 228.60mm x 6.35mm）1/4" H 尺寸 - 可視:卷 - 1' L x 9.000" W x 0.250" H（304.80mm x 228.60mm x 6.35mm）1/4" H 材質(zhì):聚氨脂泡沫 安裝類型:膠合劑 - 丙烯酸 其它名稱:SJ5904-1FT |
| POF-12664-10PK | 制造商:Richco 功能描述:Push On Feet; PVC (Flexible); Black; 15.7 mm; 8.6 mm; 1.3 mm; 7 mm |
| POF-40022 | 功能描述:PUSH-ON FEET BLK .31 X .06" RoHS:是 類別:硬件，緊固件，配件 >> 緩沖器，支腳，焊盤，握把 系列:POF MSDS 材料安全數(shù)據(jù)表:MB1102,1200, SJ5300,5400,5600,5900,6000 MSDS 產(chǎn)品目錄繪圖:Resilient Rollstock 標(biāo)準(zhǔn)包裝:1 系列:SJ-5900 形狀:矩形，扁平 - 可定制 顏色:黑 尺寸:卷 - 1' L x 9.000" W x 0.250" H（304.80mm x 228.60mm x 6.35mm）1/4" H 尺寸 - 可視:卷 - 1' L x 9.000" W x 0.250" H（304.80mm x 228.60mm x 6.35mm）1/4" H 材質(zhì):聚氨脂泡沫 安裝類型:膠合劑 - 丙烯酸 其它名稱:SJ5904-1FT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。