1Gb: x4, x8, x16 DDR3 SDRAM
ODT Characteristics
Figure 25: tAON and tAOF Definitions
t
AON
Begin point: Rising edge of CK - CK#
defined by the end point of ODTLon
t
AOF
Begin point: Rising edge of CK - CK#
defined by the end point of ODTLoff
CK
CK
V
/2
DDQ
CK#
CK#
t
t
AOF
AON
End point: Extrapolated point at V
RTT,nom
T
V
SW2
RTT,nom
T
SW1
T
SW1
DQ, DM
T
SW1
DQS, DQS#
TDQS, TDQS#
V
V
SW2
SW2
V
V
V
SW1
SW1
SSQ
V
SSQ
End point: Extrapolated point at V
SSQ
Figure 26: tAONPD and tAOFPD Definitions
t
t
AONPD
AOFPD
Begin point: Rising edge of CK - CK#
with ODT first registered high
Begin point: Rising edge of CK - CK#
with ODT first registered low
CK
CK
VDDQ/2
CK#
CK#
t
t
AONPD
TSW2
AOFPD
End point: Extrapolated point at VRTT,nom
VRTT,nom
TSW2
TSW1
TSW1
DQ, DM
DQS, DQS#
TDQS, TDQS#
VSW2
VSW2
VSW1
VSW1
VSSQ
VSSQ
End point: Extrapolated point at VSSQ
PDF: 09005aef826aa906
1Gb_DDR3_SDRAM.pdf - Rev. L 03/13 EN
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