Nokia NPD-1 Series Troubleshooting - Bb page 9

CCS Technical Documentation
Ch1-> PURX
Ch2-> MBUS toggled three times for MCU initialization
Ch3-> FBUS_TX low, MCU indicates that prommer has been noticed
Ch4-> FBUS_RX
• This boot code asks MCU to report prommer phone's configuration
information, including flash device type. Now prommer can select and
send algorithm code to MCU SRAM (and SRAM/Flash self-tests can be
executed). (See the following figure.)
Issue 1 11/2002
Figure 3: Flashing (2)
Nokia Corporation
Troubleshooting — BB
FLASH_2
Confidential
NPD-1
CH1 = PURX
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
M easure points
Production test pattern
(J396)
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