User Guide

CC Technical Documentation Troubleshooting - Baseband
RM-11
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 17
Figure 10: Flashing start
This boot code asks the MCU to report the prommer phone’s configuration information,
including the flash device type. Now the prommer can select and send the algorithm
code to the MCU SRAM (and SRAM/Flash self-tests can be executed).
Figure 11: Flashing, continued 1
• Ch1-> PURX
• Ch2-> MBUS toggled three times for MCU initialization
• Ch3-> FBUS_TX low, MCU indicates that prommer has been noticed
• Ch4-> FBUS_RX
CH1 = BSI
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
Measure points
Production test pattern
(J396)
FLASH_1
CH1 = PURX
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
Measure points
Production test pattern
(J396)
FLASH_2