6402 datasheet(63/250 Pages) INTEL

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Intel® 6400/6402 Advanced Memory Buffer Datasheet

Debug and Logic Analyzer Mode

5.1.8.4

Event Bus

The AMB LAI mode enables four events signals (EV[3:0]) to be shared between the

AMB or compatible LAI devices in a system. The signals are shared through a uniquely

defined interconnect that connects all the devices to the 4-bit wide daisy chain bus. The

4 lanes are independent and carry separate events or triggers. Due to the noisy nature

of the interconnect between LAI devices, filtering is required to eliminate spurious

events from being introduced. A typical lane is shown in Figure 5-7 below.

Initialization States

1:8

Disable[1], calibrate[2], training[3], testing[4], pollling[5],

config[6], l0[7], l0s or recalibrate[8]

Errors

30:25

• SB/NB Fail Over mode [25], when unmasked:

• SB CRC error[26],

• Thermal overload[27],

• Clock training violation (< 6 transitions in 512 UI) [28],

• Unimplemented register access[29],

• Other implementation specific errors[30]

For the Intel 6400/6402 Advanced Memory Buffer: event[30]

is the “OR“ of any bit in FERR[7:4] or NERR[7:4]

Qual_Flag

Spare

NOP

Null Event

Total Events

For the Intel 6400/6402 Advanced Memory Buffer: There is

enough space for 32 events

Table 5-7.

LAI Event Selection

Name

Events

Description

Output event/triggers

Sent to LA on DDR pins

EVBus events

Sent on DDR pins

Inject Event NB

Assert NB event bit - not necessarily LAI usage

Error Injection Trigger

Inject errors - not necessarily LAI usage

Qual Events

Start and stop events for qualification signal

Total Events

Table 5-6.

LAI Local Events (Sheet 2 of 2)

Name

Events

Sel

Addr

Description

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