JEDEC Standard No. 8-20A.01
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POD15 - 1.5V PSEUDO OPEN DRAIN I/O
Contents
Page
1 Scope ..................................................................................................................................... 1
2 Operating Conditions ............................................................................................................. 2
3 Additional Background Information ...................................................................................... 9
Annex A — (Informative) Difference between JESD8-20A and JESD8-20 .............................. 13
Annex B — (Informative) Difference between JESD8-20A.01 and JESD8-20A ...................... 14
List of Tables
Table 1 — DC Operating Conditions .......................................................................................... 2
Table 2 — AC Operating Conditions .......................................................................................... 3
Table 3 — Clock Input Operating Conditions ............................................................................. 4
Table 4 — 1.5 V I/O Impedances ................................................................................................ 6
Table 5 — POD I/O Sub Cells, 240 Ohm Based ......................................................................... 10
Table 6 — POD I/O Sub Cells, 120 Ohm Based ......................................................................... 10
List of Figures
Figure 1 — Voltage Waveform .................................................................................................... 3
Figure 2 — Clock Waveform ....................................................................................................... 5
Figure 3 — Definition of Differential AC-Swing and “Time Above AC-Level” tDVAC ........... 5
Figure 4 — Target Pull Down Characteristic at 40 Ohms ............................................................ 7
Figure 5 — Target Pull Up/Termination Characteristic at 60 Ohms ............................................ 7
Figure 6 — Example of Non-linearity, Pull Down Characteristic at 40 Ohms ............................ 8
Figure 7 — Example of Non-linearity, Pull Up/Termination Characteristic at 60 Ohms ............ 8
Figure 8 — System Configurations ............................................................................................... 9
Figure 9 — Initiator I/O Cell ......................................................................................................... 9
Figure 10 — Target I/O Cell ........................................................................................................ 10
Figure 11 — PMOS Calibration ................................................................................................... 11
Figure 12 — NMOS Calibration .................................................................................................. 12
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