XDR DRAM
프로토콜

| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 클럭 에지 | 비트 |  | NOP |  | 컬럼 읽기/쓰기 | 컬럼 읽기/쓰기 |  | 캘리브레이트/파워 다운 | 캘리브레이트/파워 다운 |  | 프리차지/리프레시 | 프리차지/리프레시 |  | 로우 액티베이트 | 로우 액티베이트 |  | 마스크 화이트 | 마스크 화이트 |
| 클럭 에지 | 비트 |  | 비트 |  | 비트 | 설명 |  | 비트 | 설명 |  | 비트 | 설명 |  | 비트 | 설명 |  | 비트 | 설명 |
| ↓ | RQ11 |  | 0 |  | 0 | COL opcode |  | 0 | COLX opcode |  | 0 | ROWP opcode |  | 0 | ROWA opcode |  | 1 | COLM opcode |
| ↓ | RQ10 |  | 0 |  | 0 | COL opcode |  | 0 | COLX opcode |  | 0 | ROWP opcode |  | 1 | ROWA opcode |  | M3 | Write mask low bits |
| ↓ | RQ9 |  | 0 |  | 0 | COL opcode |  | 1 | COLX opcode |  | 1 | ROWP opcode |  | R9 | Row address high bits |  | M2 | Write mask low bits |
| ↓ | RQ8 |  | 0 |  | 1 | COL opcode |  | 0 | COLX opcode |  | 1 | ROWP opcode |  | R10 | Row address high bits |  | M1 | Write mask low bits |
| ↓ | RQ7 |  | x |  | WRX | Write/Read bit |  | x | 예비 |  | POP1 | Precharge delay (0–3) |  | R11 | Row address high bits |  | M0 | Write mask low bits |
| ↓ | RQ6 |  | x |  | C8 | Column address high bits |  | x | 예비 |  | POP0 | Precharge delay (0–3) |  | R12 | 예비 |  | C8 | Column address high bits |
| ↓ | RQ5 |  | x |  | C9 | Column address high bits |  | x | 예비 |  | x | 예비 |  | R13 | 예비 |  | C9 | Column address high bits |
| ↓ | RQ4 |  | x |  | C10 | 예비 |  | x | 예비 |  | x | 예비 |  | R14 | 예비 |  | C10 | 예비 |
| ↓ | RQ3 |  | x |  | C11 | 예비 |  | XOP3 | Subopcode |  | x | 예비 |  | R15 | 예비 |  | C11 | 예비 |
| ↓ | RQ2 |  | x |  | BC2 | Bank address |  | XOP2 | Subopcode |  | BP2 | Precharge bank |  | BA2 | Bank address |  | BC2 | Bank address |
| ↓ | RQ1 |  | x |  | BC1 | Bank address |  | XOP1 | Subopcode |  | BP1 | Precharge bank |  | BA1 | Bank address |  | BC1 | Bank address |
| ↓ | RQ0 |  | x |  | BC0 | Bank address |  | XOP0 | Subopcode |  | BP0 | Precharge bank |  | BA0 | Bank address |  | BC0 | Bank address |
| ↑ | RQ11 |  | x |  | DELC | Command delay (0–1) |  | x | 예비 |  | POP2 | Precharge enable |  | DELA | Command delay (0–1) |  | M7 | Write mask high bits |
| ↑ | RQ10 |  | x |  | x | 예비 |  | x | 예비 |  | ROP2 | Refresh command |  | R8 | Row address low bits |  | M6 | Write mask high bits |
| ↑ | RQ9 |  | x |  | x | 예비 |  | x | 예비 |  | ROP1 | Refresh command |  | R7 | Row address low bits |  | M5 | Write mask high bits |
| ↑ | RQ8 |  | x |  | x | 예비 |  | x | 예비 |  | ROP0 | Refresh command |  | R6 | Row address low bits |  | M4 | Write mask high bits |
| ↑ | RQ7 |  | x |  | C7 | Column address low bits |  | x | 예비 |  | DELR1 | Refresh delay (0–3) |  | R5 | Row address low bits |  | C7 | Column address low bits |
| ↑ | RQ6 |  | x |  | C6 | Column address low bits |  | x | 예비 |  | DELR0 | Refresh delay (0–3) |  | R4 | Row address low bits |  | C6 | Column address low bits |
| ↑ | RQ5 |  | x |  | C5 | Column address low bits |  | x | 예비 |  | x | 예비 |  | R3 | Row address low bits |  | C5 | Column address low bits |
| ↑ | RQ4 |  | x |  | C4 | Column address low bits |  | x | 예비 |  | x | 예비 |  | R2 | Row address low bits |  | C4 | Column address low bits |
| ↑ | RQ3 |  | x |  | SC3 | Sub-column address |  | x | 예비 |  | x | 예비 |  | R1 | Row address low bits |  | SC3 | Sub-column address |
| ↑ | RQ2 |  | x |  | SC2 | Sub-column address |  | x | 예비 |  | BR2 | Refresh bank |  | R0 | Row address low bits |  | SC2 | Sub-column address |
| ↑ | RQ1 |  | x |  | SC1 | Sub-column address |  | x | 예비 |  | BR1 | Refresh bank |  | SR1 | Sub-row address |  | SC1 | Sub-column address |
| ↑ | RQ0 |  | x |  | SC0 | Sub-column address |  | x | 예비 |  | BR0 | Refresh bank |  | SR0 | Sub-row address |  | SC0 | Sub-column address |