Nokia NPD-1 Series Troubleshooting - Bb page 8

NPD-1
Troubleshooting — BB
• When phone is connected to the prommer, the prommer will first set BSI
to "1" and then uses FBUSRX for writing and MBUS for clocking. The
prommer will indicate to UEM that flash programming will take place by
writing 8-bit password (*0xC9") to UEM after BSI is set to high. After the
password is checked, BSI is set back to "0". See the following figure.
Figure 2: Flashing starts by BSI being pulled up and password being sent to UEM
MCU will indicate to prommer that it has been noticed, by using FBUSTX signal. After
this, it reports UPP type ID and is ready to receive secondary boot code to its internal
SRAM. (See the following figure.)
Page 8
Nokia Corporation
CCS Technical Documentation
FLASH_1
Confidential
CH1 = BSI
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
Measure points
Production test pattern
(J396)
Issue 1 11/2002