Samsung SC32442B54, Руководство пользователя

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K5D2G13ACM-D075
Revision 1.0
December 2006
68
MCP MEMORY
C. FUNCTION TRUTH TABLE (TABLE 1)
Current
State
CS RAS CAS WE BA Address Action Note
IDLE
H X X X X X NOP
L H H H X X NOP
L H H L X X ILLEGAL 2
L H L X BA CA, A
10
/AP ILLEGAL 2
L L H H BA RA Row (& Bank) Active ; Latch RA
L L H L BA A
10
/AP NOP 4
L L L H X X Auto Refresh or Self Refresh 5
L L L L OP code OP code Mode Register Access 5
Row
Active
H X X X X X NOP
L H H H X X NOP
L H H L X X ILLEGAL 2
L H L H BA CA, A
10
/AP Begin Read ; latch CA ; determine AP
L H L L BA CA, A
10
/AP Begin Read ; latch CA ; determine AP
L L H H BA RA ILLEGAL 2
L L H L BA A
10
/AP Precharge
L L L X X X ILLEGAL
Read
H X X X X X NOP (Continue Burst to End --> Row Active)
L H H H X X NOP (Continue Burst to End --> Row Active)
L H H L X X Term burst --> Row active
L H L H BA CA, A
10
/AP Term burst, New Read, Determine AP
L H L L BA CA, A
10
/AP Term burst, New Write, Determine AP 3
L L H H BA RA ILLEGAL 2
L L H L BA A
10
/AP Term burst, Precharge timing for Reads
L L L X X X ILLEGAL
Write
H X X X X X NOP (Continue Burst to End --> Row Active)
L H H H X X NOP (Continue Burst to End --> Row Active)
L H H L X X Term burst --> Row active
L H L H BA CA, A
10
/AP Term burst, New read, Determine AP 3
L H L L BA CA, A
10
/AP Term burst, New Write, Determine AP 3
L L H H BA RA ILLEGAL 2
L L H L BA A
10
/AP Term burst, precharge timing for Writes 3
L L L X X X ILLEGAL
Read with
Auto
Precharge
H X X X X X NOP (Continue Burst to End --> Precharge)
L H H H X X NOP (Continue Burst to End --> Precharge)
L H H L X X ILLEGAL
L H L X BA CA, A
10
/AP ILLEGAL
L L H X BA RA, RA
10
ILLEGAL 2
L L L X X X ILLEGAL
Write with
Auto
Precharge
H X X X X X NOP (Continue Burst to End --> Precharge)
L H H H X X NOP (Continue Burst to End --> Precharge)
L H H L X X ILLEGAL
L H L X BA CA, A
10
/AP ILLEGAL
L L H X BA RA, RA
10
ILLEGAL 2
L L L X X X ILLEGAL