Nokia 6585 Service Manual
RH-34
Troubleshooting - Baseband
CCS Technical Documentation
Page 16
©
2003 Nokia Corporation Confidential
Issue 1 11/2003
note a falling edge is required to load the compare register.
Flashing
Flash programming is done through VPP, FBUSTX, FBUSRX, MBUS, and BSI signals.
When phone has entered to flash programming mode, prommer will indicate to UEM
that flash programming will take place by writing 8-bit password to UEM. Prommer will
first set BSI to "1" and then uses FBUSRX for writing and MBUS for clocking. After that
BSI is set back to "0".
that flash programming will take place by writing 8-bit password to UEM. Prommer will
first set BSI to "1" and then uses FBUSRX for writing and MBUS for clocking. After that
BSI is set back to "0".
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.
this it reports UPP type ID and is ready to receive secondary boot code to its internal
SRAM.
Figure 1: Flashing start
This boot code asks MCU to report prommer phone’s configuration information, includ-
ing flash device type. Now the prommer can select and send algorithm code to MCU
SRAM (and SRAM/Flash self-tests can be executed)
ing flash device type. Now the prommer can select and send algorithm code to MCU
SRAM (and SRAM/Flash self-tests can be executed)
CH1 = BSI
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
Measure points
Production test pattern
(J396)
Production test pattern
(J396)
FLASH_1