hy5ps1g831cfp Hynix Semiconductor, hy5ps1g831cfp Datasheet - Page 13

• Manufacturer Part Number: hy5ps1g831cfp
• Description: 1gb Ddr2 Sdram
• Manufacturer: Hynix Semiconductor

Rev. 0.1 /Dec 2006
3.2.4 Differential Input AC logic Level
Note:
Note:
3.2.5 Differential AC output parameters
Note:
1. VIN(DC) specifies the allowable DC execution of each input of differential pair such as CK, CK, DQS, DQS, LDQS,
2. VID(DC) specifies the input differential voltage |VTR -VCP | required for switching, where VTR is the true input
1. VID(AC) specifies the input differential voltage |VTR -VCP | required for switching, where VTR is the true input sig-
2. The typical value of VIX(AC) is expected to be about 0.5 * VDDQ of the transmitting device and VIX(AC) is
1. The typical value of VOX(AC) is expected to be about 0.5 * V DDQ of the transmitting device and VOX(AC) is
Symbol
Symbol
V
V
V
OX
ID
IX
LDQS, UDQS and UDQS.
(such as CK, DQS, LDQS or UDQS) level and VCP is the complementary input (such as CK, DQS, LDQS or UDQS)
level.
The minimum value is equal to VIH(DC) - V IL(DC).
nal
(such as CK, DQS, LDQS or UDQS) and VCP is the complementary input signal (such as CK, DQS, LDQS or UDQS).
The minimum value is equal to V IH(AC) - V IL(AC).
expected to track variations in VDDQ. VIX(AC) indicates the voltage at which differential input signals must cross.
expected to track variations in VDDQ. VOX(AC) indicates the voltage at which differential output signals must
cross.
(ac)
(ac)
(ac)
ac differential input voltage
ac differential cross point voltage
ac differential cross point voltage
Parameter
Parameter
V
V
CP
TR
< Differential signal levels >
0.5 * VDDQ - 0.175
0.5 * VDDQ - 0.125
V
V
DDQ
SSQ
V
Min.
Min.
0.5
ID
0.5 * VDDQ + 0.175
0.5 * VDDQ + 0.125
VDDQ + 0.6
V
IX or
Max.
Max.
Crossing point
V
HY5PS1G1631C(L)FP
OX
HY5PS1G431C(L)FP
HY5PS1G831C(L)FP
Units
Units Notes
V
V
V
Notes
1
2
1
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