- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378746 > UPD72852A (NEC Corp.) IEEE1394a-2000 COMPLIANT 400 Mbps TWO-PORT PHY LSI PDF資料下載
參數(shù)資料
| 型號： | UPD72852A |
| 廠商： | NEC Corp. |
| 英文描述： | IEEE1394a-2000 COMPLIANT 400 Mbps TWO-PORT PHY LSI |
| 中文描述： | 1個IEEE1394a 2000年的要求400 Mbps的雙端口PHY的大規(guī)模集成電路 |
| 文件頁數(shù)： | 21/48頁 |
| 文件大?。?/td> | 373K |
| 代理商： | UPD72852A |
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頁當前第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
Data Sheet S16725EJ2V0DS
21
μ
PD72852A
3.4 PLL and Crystal Oscillation Circuit
3.4.1 Crystal Oscillation Circuit
To supply the clock of 24.576 MHz ± 100 ppm, use an external capacitor of 10 pF and a crystal of 50 ppm.
3.4.2 PLL
The crystal oscillator multiplies the 24.576 MHz frequency by 16 (393.216 MHz).
3.5 CMC
CMC shows the bus manager function which corresponds to the c bit of the Self_ID packet and the Contender bit in
the PHY register when the input is High.
The value of CMC can be changed with software through the Link layer; this pin sets the initial value during Power-
on Reset. Use a pull-up or pull-down resistor of 10 k
, based on the device’s specification.
3.6 PC0-PC2
The PC0-PC2 pin corresponds to the power field of the Self_ID packet and Pwr_class in the PHY register. Refer to
Section 4.3.4.1 of the IEEE1394a-2000 specification for information regarding the Pwr_class. The value of Pwr can be
changed with software through the Link layer controller; this pin sets the initial value during Power-on Reset. Use a
pull-up or pull-down resistor of 10 k
based on the application.
3.7 RESETB
Connect an external capacitor of 0.1
μ
F between the RESETB pin and GND. If the voltage drops below 0 V, a reset
pulse is generated. All of the circuits are initialized, including the contents of the PHY register.
3.8 RI1
Connect an external resistor of 9.1 k
between the RI1 pin and GND to limit the LSI’s current.
相關PDF資料 |
PDF描述 |
|---|---|
| UPD72852AGB-8EU | IEEE1394a-2000 COMPLIANT 400 Mbps TWO-PORT PHY LSI |
| UPD72870 | IEEE1394 1-CHIP OHCI HOST CONTROLLER |
| UPD72870F1-FA2 | IEEE1394 1-CHIP OHCI HOST CONTROLLER |
| UPD72871GM-8ED | IEEE1394 1-CHIP OHCI HOST CONTROLLER |
| UPD72871 | IEEE1394 1-CHIP OHCI HOST CONTROLLER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UPD74HC04C | 制造商:Panasonic Industrial Company 功能描述:IC |
| UPD750068GT-396 | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD7507C189 | 制造商:Panasonic Industrial Company 功能描述:IC |
| UPD7508CU265 | 制造商:Panasonic Industrial Company 功能描述:IC |
| UPD75208 | 制造商:Panasonic Industrial Company 功能描述:IC |
發(fā)布緊急采購，3分鐘左右您將得到回復。