поискавой системы для электроныых деталей |
|
SL28PCIE14 датащи(PDF) 3 Page - Silicon Laboratories |
|
SL28PCIE14 датащи(HTML) 3 Page - Silicon Laboratories |
3 / 13 page SL28PCIe14 DOC#: SP-AP-0014 (Rev. 0.2) Page 3 of 13 EProClock® Programmable Technology EProClock® is the world’s first non-volatile programmable clock. The EProClock® technology allows board designer to promptly achieve optimum compliance and clock signal integrity; historically, attainable typically through device and/or board redesigns. EProClock® technology can be configured through SMBus or hard coded. Features: - > 4000 bits of configurations - Can be configured through SMBus or hard coded - Custom frequency sets - Differential skew control on true or compliment or both - Differential duty cycle control on true or compliment or both - Differential amplitude control - Differential and single-ended slew rate control - Program Internal or External series resistor on single-ended clocks - Program different spread profiles - Program different spread modulation rate Frequency/Spread Select Pin SS[1:0] Apply the appropriate logic levels to SS [1:0] inputs before CKPWRGD assertion to achieve clock frequency selection. When the clock chip sampled HIGH on CKPWRGD and indicates that the voltage is stable then SS [1:0] input values are sampled. This process employs a one-shot functionality and once the CKPWRGD sampled a valid HIGH, all other SS[1:0], and CKPWRGD transitions are ignored. Serial Data Interface To enhance the flexibility and function of the clock synthesizer, a two-signal serial interface is provided. Through the Serial Data Interface, various device functions, such as individual clock output buffers are individually enabled or disabled. The registers associated with the Serial Data Interface initialize to their default setting at power-up. The use of this interface is optional. Clock device register changes are normally made at system initialization, if any are required. The interface cannot be used during system operation for power management functions. Data Protocol The clock driver serial protocol accepts byte write, byte read, block write, and block read operations from the controller. For block write/read operation, access the bytes in sequential order from lowest to highest (most significant bit first) with the ability to stop after any complete byte is transferred. For byte write and byte read operations, the system controller can access individually indexed bytes. The offset of the indexed byte is encoded in the command code described in Table 1. The block write and block read protocol is outlined in Table 2 while Table 3 outlines byte write and byte read protocol. The slave receiver address is 11010010 (D2h). Frequency/Spread Select Pin (SS[1:0]) SS1 SS0 Frequency (MHz) Spread (%) Note 0 0 100.00 OFF Default Value for SS [1:0] =00 0 1 100.00 - 0.5 1 0 100.00 +/- 0.25 1 1 100.00 - 0.75 MID 0 125 OFF MID 1 200 OFF Table 1. Command Code Definition Bit Description 7 0 = Block read or block write operation, 1 = Byte read or byte write operation (6:0) Byte offset for byte read or byte write operation. For block read or block write operations, these bits should be '0000000' Table 2. Block Read and Block Write Protocol Block Write Protocol Block Read Protocol Bit Description Bit Description 1Start 1 Start |
Аналогичный номер детали - SL28PCIE14 |
|
Аналогичное описание - SL28PCIE14 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | 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 |