Electronic Components Datasheet Search |
|
AMS73CAG02168RAUJI8I Datasheet(PDF) 7 Page - Advanced Monolithic Systems Ltd |
|
AMS73CAG02168RAUJI8I Datasheet(HTML) 7 Page - Advanced Monolithic Systems Ltd |
7 / 31 page 7 AMS73CAG01808RA Rev. 1.0 December 2010 Mode Register MR0 The Mode Register MR0 stores the data for controlling various operating modes of DDR3 SDRAM. It con- trols burst length, read burst type, CAS latency, test mode, DLL reset, WR and DLL control for precharge power-down, which include various vendor specific options to make DDR3 SDRAM useful for various appli- cations. The mode register is written by asserting low on CS, RAS, CAS, WE, BA0, BA1 and BA2, while controlling the states of address pins according to the table below. Address Field A7 mode 0Normal 1Test A3 Read Burst Type 0 Nibble Sequential 1Interleave A8 DLL Reset 0No 1Yes Mode Register 0 BA1 BA0 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 0 TM CAS Latency RBT DLL 0*1 WR Write recovery for autoprecharge A11 A10 A9 WR(cycles) 00 0 Reserved 00 1 5*2 01 0 6*2 01 1 7*2 10 0 8*2 10 1 10*2 11 0 12*2 11 1 Reserved A13 0 BL A1 A0 BL 0 0 8 (Fixed) 0 1 4 or 8(on the fly) 1 0 4 (Fixed) 11 Reserved *1 : BA2 and A13 are reserved for future use and must be programmed to 0 during MRS. *2 : WR(write recovery for autoprecharge)min in clock cycles is calculated by dividing tWR(in ns) by tCK(in ns) and rounding up to the next integer: WRmin[cycles] = Roundup(tWR[ns]/tCK[ns]). The WR value in the mode register must be programmed to be equal or larger than WRmin. The programmed WR value is used with tRP to determine tDAL. BA2 0*1 BA1 BA0 MRS mode 00 MR0 01 MR1 10 MR2 11 MR3 A12 PPD A12 DLL Control for Precharge PD 0 Slow exit (DLL off) 1 Fast exit (DLL on) CAS Latency A6 A5 A4 A2 Latency 00 0 0 Reserved 00 1 0 5 01 0 0 6 01 1 0 7 10 0 0 8 10 1 0 9 11 0 0 10 11 1 0 11(Optional for DDR3-1600) CL AMS73CAG01808RA |
Similar Part No. - AMS73CAG02168RAUJI8I |
|
Similar Description - AMS73CAG02168RAUJI8I |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |