Service Modes, Error Codes, and Fault Finding
EN 19EJ2.0U LA 5.
Figure 5-6 “Off” to “Semi Stand-by” flowchart (part 2)
Release viper reset
Feed cold boot script(1)
Release viper reset
Feed initializing boot script (3)
disable alive mechanism
Detect EJTAG debug probe
(pulling pin of the probe interface to
ground by inserting EJTAG probe)
EJTAG probe
connected ?
No
Yes
Bootscript ready
in 1250 ms?
Yes
No
Release viper reset
Feed warm boot script(2)
Cold boot?
Yes
No
RPC start (comm. protocol)
To Part CTo Part CTo Part C To Part C
Set I²C slave address
of Standby µP to (A0h)
Set I²C slave address
of Standby µP to (64h)
Release PNX2015 reset 100ms after
Viper reset is released
Release PNX2015 reset 100ms
after Viper reset is released
+2.5V or +3.3V errorNo
Yes
Activate supply detection algorithms for
+1.2V, +2.5V and +3.3V
Enable the DC/DC converters for
+2.5V and +3.3V.
+1.2V error
detect-1V2
received within
250ms?
From Part A
No
Yes
SP
SP
Start polling the detect-2V5
and detect-3V3 every 40ms
detect-2V5 and
detect-3V3 received within
250 ms?
Enable the supply fault detection
interrupt
Supply fault errorYes
No
SP
SUPPLY-FAULT I/O line
is High?
+8V6 error
From Part A From Part A From Part A
SP
activate +8V6 supply
detection algorithm
return
Flash to Ram image
transfer succeeded
within 30s ?
No
Yes
G_15990_103b.eps
100506
action holder: MIPS
autonomous action
action holder: St-by
To Next Page
Loading...
