 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
MPC855T датащи(PDF) 67 Page - Freescale Semiconductor, Inc |
|
|
|||||||||||||||||||||||||||||
MPC855T датащи(HTML) 67 Page - Freescale Semiconductor, Inc |
|
|
67 / 80 page  MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8 Freescale Semiconductor 67 FEC Electrical Characteristics 13 FEC Electrical Characteristics This section provides the AC electrical specifications for the Fast Ethernet controller (FEC). Note that the timing specifications for the MII signals are independent of system clock frequency (part speed designation). Also, MII signals use TTL signal levels compatible with devices operating at either 5.0 V or 3.3 V. 13.1 MII Receive Signal Timing (MII_RXD[3:0], MII_RX_DV, MII_RX_ER, MII_RX_CLK) The receiver functions correctly up to a MII_RX_CLK maximum frequency of 25 MHz + 1%. There is no minimum frequency requirement. In addition, the processor clock frequency must exceed the MII_RX_CLK frequency – 1%. Table 29 provides information on the MII receive signal timing. Figure 72 shows MII receive signal timing. Figure 72. MII Receive Signal Timing Diagram Table 29. MII Receive Signal Timing Num Characteristic Min Max Unit M1 MII_RXD[3:0], MII_RX_DV, MII_RX_ER to MII_RX_CLK setup 5 — ns M2 MII_RX_CLK to MII_RXD[3:0], MII_RX_DV, MII_RX_ER hold 5 — ns M3 MII_RX_CLK pulse width high 35% 65% MII_RX_CLK period M4 MII_RX_CLK pulse width low 35% 65% MII_RX_CLK period M1 M2 MII_RX_CLK (Input) MII_RXD[3:0] (Inputs) MII_RX_DV MII_RX_ER M3 M4 |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
