GS81314LT19 Datasheet, PDF (18/42 Pages) GSI Technology – 144Mb SigmaDDR-IVe™ Burst of 2 Single-Bank ECCRAM™

GS81314LT19/37GK-933/800
Loopback Mode Input Group Definition and Input-to-Output Pin Mapping
Inputs are divided into 2 groups because there are up to 28 inputs to train (22 address, 2 control, and 4 KD clocks), but as few as 18
outputs available to loop them back to (in x18 devices).
There are 18 inputs per group - one per DQ output in x18 devices, and one per two DQ outputs in x36 devices.
Bit #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Input Pins
GP1
GP2
8P
8V
8M
8T
8J
---
9H
9L
8G
9K
9F
7H
8E
---
9D
---
8C
---
6T
---
6P
6V
6M
---
6J
7N
5H
5L
6G
5K
5F
---
6E
---
5D
6C
Input Signals
GP1
GP2
SA4
SA6
SA8
SA16
SA10
SA18
SA12
SA0
SA2
RSVD
KD0
KD0
R/W
RSVD
SA20
RSVD
SA14
SA1
SA3
SA5
SA7
SA15
SA9
SA17
SA11
SA19
RSVD
RSVD
SA21
RSVD
LD
KD1
KD1
RSVD
RSVD
SA13
Output Pins
x18
x36
13V
13V, 12W
13T
13T, 12U
13P
13P, 12R
13N
13N, 12P
12J
12J, 12M
12G
12G, 13H
12F
12F, 13G
12D
12D, 13E
12B
12B, 13C
2W
2W, 1V
2U
2U, 1T
2R
2R, 1P
2P
2P, 1N
2M
2M, 2J
1H
1H, 2G
1G
1G, 2F
1E
1E, 2D
1C
1C, 2B
Output Signals
x18
x36
DQ8
DQ8, DQ17
DQ7
DQ7, DQ16
DQ6
DQ6, DQ15
DQ5
DQ5, DQ14
DQ4
DQ4, DQ13
DQ3
DQ3, DQ12
DQ2
DQ2, DQ11
DQ1
DQ1, DQ10
DQ0
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQ16
DQ17
DQ0, DQ9
DQ18, DQ27
DQ19, DQ28
DQ20, DQ29
DQ21, DQ30
DQ22, DQ31
DQ23, DQ32
DQ24, DQ33
DQ25, DQ34
DQ26, DQ35
Notes:
1. Blue shading indicates input pins that are unused (NU) in certain device configurations. During Loopback Mode, the associated
output pins loop back the states of those input pins regardless whether they are used or unused.
2. Gray shading indicates Group 2 inputs that are reserved (RSVD) for future use. During Loopback Mode, the associated output
pins act as if they were looping back input pins tied Low.
3. The 18 unused DQ in x18 devices remain in their “NU” states during Loopback Mode.
Rev: 1.02 3/2016
18/42
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2015, GSI Technology