Debug and Logic Analyzer Mode
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.
Figure 5-5. Local Event Mux Block Diagram
Local Event Mux Block Diagram
Other
Qual logic
Qual
S
R
Q
Qual_start event
3
12
Local pattern
matching events
Qual_stop /
Inj_err event
MMEVENTSEL
Delay
Qual_flag
LAI Match and Mask Logic
LAI Qualification Logic
Local Event Muxes
7
7
Spare
Errors
Error injection control
0
31
Lai mode
6
6
30-25
5
5
Qual flag
24
4
4
18
SB IB debug events
EVBus in[3:0]
MMEVENT[2:0]
FBD link states
Null event
23-16
LAI trigger[10:0]
3
3
15-12
NB IB event control
2
2
11-9
1
1
8-1
0
0
0
0
4
Output
filter
EVBus out[3:0]
EVENTSELx,
EVBUS
1
EVBus[3:0]
4
Input filter
EVBus in[3:0]
EVBus Input and Output
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.
Table 5-6.
LAI Local Events (Sheet 1 of 2)
Sel
Addr
Name
Events
Description
Mask and Match
3
11:9
MMEVENT2:MMEVENT0
Slota, Slotb, Slotc, and Frame command matches - 3 events
preselected from 13 possible matches
In-band debug
EVBus events
8
4
23:16
15:12
Received on SB link in-band EV[7:0]
Received on select DDR pins Event Bus EV[3:0]
62
Intel® 6400/6402 Advanced Memory Buffer Datasheet
INTEL [ INTEL ]
