W632GG8KB Datasheet, PDF (35/159 Pages) Winbond – 32M X 8 BANKS X 8 BIT DDR3 SDRAM

W632GG8KB
8.10.1 MPR Functional Description
 One bit wide logical interface via all DQ pins during READ operation.
 Register Read:
—DQ[0] drives information from MPR
—DQ[7:1] either drive the same information as DQ [0], or they drive 0b
 Addressing during for Multi Purpose Register reads for all MPR agents:
— BA[2:0]: Don't care
— A[1:0]: A[1:0] must be equal to ‘00’b. Data read burst order in nibble is fixed
— A[2]: A[2] selects the burst order
For BL=8, A[2] must be equal to 0b, burst order is fixed to [0,1,2,3,4,5,6,7], *)
For Burst Chop 4 cases, the burst order is switched on nibble base
A[2]=0b, Burst order: 0,1,2,3 *)
A[2]=1b, Burst order: 4,5,6,7 *)
— A[9:3]: Don't care
— A10/AP: Don't care
— A12/BC#: Selects burst chop mode on-the-fly, if enabled within MR0
— A11, A13 and A14: Don't care
 Regular interface functionality during register reads:
— Support two Burst Ordering which are switched with A2 and A[1:0]=00b
— Support of read burst chop (MRS and on-the-fly via A12/BC#)
— All other address bits (remaining column address bits including A10, all bank address bits) will
be ignored by the DDR3 SDRAM
— Regular read latencies and AC timings apply
— DLL must be locked prior to MPR Reads
Note: *) Burst order bit 0 is assigned to LSB and burst order bit 7 is assigned to MSB of the selected MPR agent.
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Publication Release Date: Jul. 28, 2014
Revision: A04