6402 datasheet(62/250 Pages) INTEL

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Debug and Logic Analyzer Mode

Intel® 6400/6402 Advanced Memory Buffer Datasheet

To match an FBD command that might occur in any slot including the A slot, mask out

bits [38:24] and set both Mask[39] and Match[39] to 0.

• If Mask[39] = 0 AND Match[39] = 1 then only match on memory write data.

— Match and mask against received data in slot B and slot C if

Frame type is Write Data Frame

5.1.8.3

Local Events

The mask/match features in the AMB LAI, and certain internal state and error

conditions, will be used to generate local events. Global events propagated through the

in-band debug and external event (EV) bus will also generate local events. All of the

local events can be selected by muxes as trigger sources for LAI event signals and

event bus signals. While not used in LAI mode, these events are also used in error

injection and for sourcing events in the NB status frames. For exact details see the

Configuration Registers Chapter.

An overview of the Local Events logic is shown below. The Match/Mask, Qualification

and Event Bus blocks are described in more detail in other sections.

Table 5-6 shows the 32 local events. Each of these local events is logged in a

configuration register and is sent to 19 32:1 muxes. The select lines for these muxes

are programmed in configuration registers. Table 5-7 shows the destination (intended

use) of the 19 selected events.

Figure 5-5. Local Event Mux Block Diagram

Local Event Mux Block Diagram

EVBus Input and Output

Output

filter

8-1

11-9

15-12

30-25

23-16

LAI Qualification Logic

LAI Match and Mask Logic

EVENTSELx,

EVBUS

Input filter

Local pattern

matching events

S Q

Delay

Other

Qual logic

Qual

LAI trigger[10:0]

NB IB event control

Null event

EVBus[3:0]

FBD link states

SB IB debug events

Errors

Spare

Qual_start event

Qual_stop /

Inj_err event

Qual flag

EVBus in[3:0]

MMEVENT[2:0]

MMEVENTSEL

Local Event Muxes

Lai mode

Error injection control

Qual_flag

EVBus out[3:0]

EVBus in[3:0]

Table 5-6.

LAI Local Events (Sheet 1 of 2)

Name

Events

Sel

Addr

Description

Mask and Match

11:9

MMEVENT2:MMEVENT0

Slota, Slotb, Slotc, and Frame command matches - 3 events

preselected from 13 possible matches

In-band debug

23:16

Received on SB link in-band EV[7:0]

EVBus events

15:12

Received on select DDR pins Event Bus EV[3:0]

6402 Datasheet(PDF) 62 Page - Intel Corporation

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