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GS81313LT18 Scheda tecnica(PDF) 4 Page - GSI Technology

Il numero della parte GS81313LT18
Spiegazioni elettronici  144Mb SigmaDDR-IIIe??Burst of 2 ECCRAM?
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Produttore elettronici  GSI [GSI Technology]
Homepage  http://www.gsitechnology.com
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GS81313LT18/36GK-833/714/625
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.13 7/2016
4/29
© 2014, GSI Technology
Pin Description
Symbol
Description
Type
SA
Address — Read or Write Address is registered on
CK.
Input
DQ[35:0]
Write/Read Data — Registered on
KD and KD during Write operations; aligned with CQ and CQ
during Read operations.
DQ[17:0] - x18 and x36.
DQ[35:18] - x36 only.
I/O
QVLD[1:0]
Read Data Valid — Driven high one half cycle before valid Read Data.
Output
CK, CK
Primary Input Clocks — Dual single-ended. Used for latching address and control inputs, for internal timing
control, and for output timing control.
Input
KD[1:0],
KD[1:0]
Write Data Input Clocks — Dual single-ended. Used for latching write data inputs.
KD0, KD0: latch Write Data (DQ[17:0] in x36, DQ[8:0] in x18).
KD1, KD1: latch Write Data (DQ[35:18] in x36, DQ[17:9] in x18).
Input
CQ[1:0],
CQ[1:0]
Read Data Output Clocks — Free-running output (echo) clocks, tightly aligned with read data outputs.
Facilitate source-synchronous operation.
CQ0, CQ0: align with DQ[17:0] in x36, and DQ[8:0] in x18.
CQ1, CQ1: align with DQ[35:18] in x36, and DQ[17:9] in x18.
Output
LD
Load Enable — Registered on
CK.
LD = 0: Loads a new address and initiates a Read or Write operation.
LD = 1: Initiates a NOP operation.
Input
R/W
Read / Write Enable — Registered on
CK.
R/W = 0: initiates a Write operation when LD = 0.
R/W = 1: initiates a Read operation when LD = 0.
Input
PLL
PLL Enable — Weakly pulled High internally.
PLL = 0: disables internal PLL.
PLL = 1: enables internal PLL.
Input
RST
Reset — Holds the device inactive and resets the device to its initial power-on state when asserted High.
Weakly pulled Low internally.
Input
ZQ
Driver Impedance Control Resistor Input — Must be connected to VSS through an external resistor RQ to
program driver impedance.
Input
ZT
ODT Impedance Control Resistor Input — Must be connected to VSS through an external resistor RT to
program ODT impedance.
Input
RCS
Current Source Resistor Input — Must be connected to VSS through an external 2K resistor to provide
an accurate current source for the PLL.
Input
MZT[1:0]
ODT Mode Select — Set the ODT state globally for all input groups. Must be tied High or Low.
MZT[1:0] = 00: disables ODT on all input groups, regardless of PZT[1:0].
MZT[1:0] = 01: enables strong ODT on select input groups, as specified by PZT[1:0].
MZT[1:0] = 10: enables weak ODT on select input groups, as specified by PZT[1:0].
MZT[1:0] = 11: reserved.
Input


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