 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
M65KG256AB датащи(PDF) 23 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
M65KG256AB датащи(HTML) 23 Page - STMicroelectronics |
|
|
23 / 51 page  M65KG256AB 5 Registers description 23/51 5 Registers description The DDR Mobile RAM has the two mode registers, the Mode Register and the Extended Mode register. 5.1 Mode Register description The Mode Register is used to select the CAS Latency, Burst Type, and Burst Length of the device: ● The CAS Latency defines the number of clock cycles after which the first data will be output during a Burst Read operation. ● The Burst Type specifies the order in which the burst data will be addressed. This order is programmable either to sequential or interleaved (see Table 5: Burst Type Definition). ● The Burst Length is the number of Words that will be output or input during a Burst Read or Write operation. It can be configured as 2, 4, 8 or 16 Words. The Mode Register must be programmed at the end of the Power-Up sequence prior to issuing any command. It is loaded by issuing a Mode Register Set command (MRS), with BA0-BA1 are set to ‘00’ to select the Mode Register. Table 7: Mode Register Definition, shows the available Mode Register configurations. Table 7. Mode Register Definition Address Bits Mode Register Bit Register Description Value Description A12-A7 - - 000000 A6-A4 MR6-MR4 CAS Latency Bits (Read Operations) 011 3 Clock Cycles Other configurations reserved A3 MR3 Burst Type Bit 0 Sequential 1 Interleaved A2-A0 MR2-MR0 Burst Length Bit 001 2 Words 010 4 Words 011 8 Words 100 16 Words Other configurations reserved BA1-BA0 - - 00 |
|
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
