 |
công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
|
công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
S75WS256NDFBAWMB bảng dữ liệu(PDF) 159 Page - SPANSION |
|
|
|||||||||||||||||||||||||||||
S75WS256NDFBAWMB bảng dữ liệu(HTML) 159 Page - SPANSION |
|
|
159 / 216 page  February 17, 2005 S75WS-N-00_A0 S75WS256Nxx Based MCPs 157 Advance Information 31 Configuration Registers Two user-accessible configuration registers define the device operation. The bus configuration register (BCR) defines how the CellularRAM interacts with the system memory bus and is nearly identical to its counterpart on burst mode Flash devices. The refresh configuration register (RCR) is used to control how refresh is performed on the DRAM array. These registers are automatically loaded with default settings during power-up, and can be updated any time the devices are op- erating in a standby state. 31.1 Access Using CRE The configuration registers can be written to using either a synchronous or an asynchronous op- eration when the configuration register enable (CRE) input is High (see Figure 31.1 and Figure 31.2). When CRE is Low, a Read or Write operation will access the memory array. The reg- ister values are written via address pins A[21:0]. In an asynchronous Write, the values are latched into the configuration register on the rising edge of ADV#, CE#, or WE#, whichever oc- curs first; LB# and UB# are Don’t Care. The BCR is accessed when A[19] is High; the RCR is accessed when A[19] is Low. For Reads, address inputs other than A[19] are Don’t Care, and reg- ister bits 15:0 are output on DQ[15:0]. |
|
Link URL |
| Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Liên kết đến bảng dữ liệu | Trao đổi link | Tìm kiếm theo nhà sản xuất 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 |
Vietnamese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
