HBD-E385/E390/T39
74
Pin No.
Pin Name
I/O
Description
E9
VDDQ
-
DQ Power Supply: 1.5V +/-0.075V
F1
VDDQ
-
DQ Power Supply: 1.5V +/-0.075V
F2
DQL2
I/O
Data Input/output: Bi-directional data bus.
F3
DQSL
I/O
Data Strobe: Output with read data, input with write data. Edge-aligned with read data,
centered in write data. For the x16, DQSL: corresponds to the data on DQL0-DQL7; DQSU
corresponds to the data on DQU0-DQU7. The data strobe DQS, DQSL and DQSU are paired
with differential signals DQS, DQSL and DQSU, respectively, to provide differential pair
signaling to the system during reads and writes. DDR3 SDRAM supports differential data
strobe only and does not support single-ended.
F4
NO_USE
-
Not used
F5
NO_USE
-
Not used
F6
NO_USE
-
Not used
F7
DQL1
I/O
Data Input/output: Bi-directional data bus.
F8
DQL3
I/O
Data Input/output: Bi-directional data bus.
F9
VSSQ
-
DQ Ground
G1
VSSQ
-
DQ Ground
G2
DQL6
I/O
Data Input/output: Bi-directional data bus.
G3
DQSL
I/O
Data Strobe: Output with read data, input with write data. Edge-aligned with read data,
centered in write data. For the x16, DQSL: corresponds to the data on DQL0-DQL7; DQSU
corresponds to the data on DQU0-DQU7. The data strobe DQS, DQSL and DQSU are paired
with differential signals DQS, DQSL and DQSU, respectively, to provide differential pair
signaling to the system during reads and writes. DDR3 SDRAM supports differential data
strobe only and does not support single-ended.
G4
NO_USE
-
Not used
G5
NO_USE
-
Not used
G6
NO_USE
-
Not used
G7
VDD
-
Power Supply: 1.5V +/-0.075
G8
VSS
-
Ground
G9
VSSQ
-
DQ Ground
H1
VREFDQ
-
Reference voltage for DQ
H2
VDDQ
-
DQ Power Supply: 1.5V +/-0.075V
H3
DQL4
I/O
Data Input/output: Bi-directional data bus.
H4
NO_USE
-
Not used
H5
NO_USE
-
Not used
H6
NO_USE
-
Not used
H7
DQL7
I/O
Data Input/output: Bi-directional data bus.
H8
DQL5
I/O
Data Input/output: Bi-directional data bus.
H9
VDDQ
-
DQ Power Supply: 1.5V +/-0.075V
J1
NC
-
No Connect: No internal electrical connection is present.
J2
VSS
-
Ground
J3
RAS
I
Command Input: RAS (along with CS) de
fi
ne the command being entered.
J4
NO_USE
-
Not used
J5
NO_USE
-
Not used
J6
NO_USE
-
Not used
J7
CK
I
Clock: CK is differential clock input. All address and control input signals are sampled on the
crossing of the positive edge of CK. Output (read) data is referenced to the crossing of CK.
J8
VSS
-
Ground
J9
NC
-
No Connect: No internal electrical connection is present.
K1
ODT
I
On Die Termination: ODT (registered HIGH) enables termination resistance internal to
the DDR3 SDRAM. When enabled, ODT is only applied to each DQ, DQS, DQS and DM/
TDQS, NU/TDQS (When TDQS is enabled via Mode Register A11=1 in MR1) signal for x8
con
fi
gurations. The ODT pin will be ignored if the Mode Register (MR1) is programmed to
disable ODT.
K2
VDD
-
Power Supply: 1.5V +/-0.075
K3
CAS
I
Command Input: CAS (along with CS) de
fi
ne the command being entered.
K4
NO_USE
-
Not used
K5
NO_USE
-
Not used
K6
NO_USE
-
Not used
K7
CK
I
Clock: CK is differential clock input. All address and control input signals are sampled on the
crossing of the negative edge of CK. Output (read) data is referenced to the crossing of CK.
K8
VDD
-
Power Supply: 1.5V +/-0.075
