Philips BJ3.1E LA Service Manual page 24

EN 24 5. BJ3.1E LA
From part A
action holder: MIPS
action holder: St-by
autonomous action
No
No
No
To part C To part C
Service Modes, Error Codes, and Fault Finding
Start polling the detect-1V2 every 40ms
detect-1V2
received within
Enable the supply for
+2.5V and +3.3V (ENABLE-3V3)
Start polling the detect-3V3 every 40ms
detect-3V3
received within
Activate supply detection algorithms for
+1V2 and +3V3
SUPPLY-FAULT I/O line
Enable the supply fault detection
Set I²C slave address
of Standby µP to (A0h)
Detect EJTAG debug probe
(pulling pin of the probe interface to
ground by inserting EJTAG probe)
EJTAG probe
connected ?
No Cold boot?
Release viper reset Release viper reset
Feed warm boot script(2) Feed cold boot script(1)
Release PNX2015 reset 100ms after
Viper reset is released
Bootscript ready
in 1250 ms?
Set I²C slave address
of Standby µP to (64h)
RPC start (comm. protocol)
Figure 5-7 "Off" to "Semi Stand-by" flowchart (part 2)
From part A
No
250ms?
Yes
No separate enable and
detect is present for the +2V5
supply in the Baby Jaguar.
No
250 ms?
Yes
No Supply fault error
is High?
Yes
interrupt
Yes
No
Release viper reset
Yes
Feed initializing boot script (3)
disable alive mechanism
Release PNX2015 reset 100ms
after Viper reset is released
Yes
To part C
From part A
activate +8V6 supply
+8V6 error
detection algorithm
return
SP
+1.2V error
SP
+3.3V error
SP
SP
G_15960_118b.eps
030806
To part C
From part A