Service Modes, Error Codes, and Fault Finding
EN 22
BJ2.4U/BJ2.5U LA
5.
Figure 5-7 “Off” to “Semi Stand-by” flowchart (part 2)
No
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
Viper SW initialization
succeeded
within 20s?
No
Release viper reset
Feed warm boot script(2)
Cold boot?
Yes
No
RPC start (comm. protocol)
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
+3.3V error
No
Yes
Activate supply detection algorithms for
+1V2 and +3V3
Enable the supply for
+2.5V and +3.3V (ENABLE-3V3)
+1.2V error
detect-1V2
received within
250ms?
No
Yes
SP
SP
detect-3V3
received within
250 ms?
Enable the supply fault detection
interrupt
Supply fault error
No
Yes
SP
SUPPLY-FAULT I/O line
is High?
Switch Viper in reset
Start polling the detect-3V3 every 40ms
No separate enable and
detect is present for the +2V5
supply in the Baby Jaguar.
Flash to RAM image
transfer succeeded
within 30s?
No
Yes
Code = 53
Code = 5
F_15400_096b.eps
260505
From part A
To part C
To part C
To part C
To part C
From part B
autonomous action
action holder: St-by
action holder: MIPS
