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Debug and Logic Analyzer Mode

Intel® 6400/6402 Advanced Memory Buffer Datasheet

5.1.8

LAI Features

5.1.8.1

Control and Status Registers (CSRs)

LAI mode CSRs will be accessed and programmed through SMBus when in LAI mode.

See Chapter 14, “Registers,” for complete details.

Note:

LAI registers cannot be accessed in-band over the FBD link

5.1.8.2

Pattern Matching

The LAI block can pattern match on three command values at any of three command

slots and combine the results into independent and combined local events. There are

13 total pattern matching events: a command value matches a command slot (9

events), a command value matches any slot (3 events), and all command values

appear in the frame (1 event).

This pattern matching is also used in normal mode for error injection and NB in-band

event generation.Figure 5-4 shows the LAI match and mask logic.

Figure 5-3. LAI Signal Group Timing

CLK

LAI data

Cmd/Addr

LAI data

on DQ

LAI data

on DQS

Triggers

Cmd/Addr

early

data

early

data

early

data

late

data

late

data

late

data

trigger matched

to early/late data

Qual

qual on frame

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