LC823450 Datasheet, PDF (21/55 Pages) ON Semiconductor – Low Power & High-Resolution Audio Processing System LSI

LC823450
2-1 Boot mode
Boot modes available depend on BMODE[1:0] port status
IPL mode
BMODE1 BMODE0
explanation
Physical Boot
USB
PD
PD
470kΩ 470kΩ
Internal ROM boot(eMMC Physical Boot with USB download
–SD card I/F Ch0 + USB Device + EXTINT2E + EXTINT2F)
By using Boot operation mode of eMMC, load IPL2(program) from eMMC
connected to SD0 to internal SRAM and jump to IPL2.
IPL2 is written through USB.
Physical Boot
SD
PD
PU
470kΩ 470kΩ
Internal ROM boot(eMMC Physical Boot with SD Ch1 download
–SD card I/F Ch0 + SD card I/F Ch1 + EXTINT2E + EXTINT2F)
By using Boot operation mode of eMMC, load IPL2(program) from eMMC
connected to SD0 to internal SRAM and jump to IPL2.
IPL2 is written through SD1.
User Area Boot
USB
User Area Boot
SD
SPI Boot
USB
SPI Boot
SD
QSPI Boot
USB
PD
1kΩ
PU
470kΩ
PU
470kΩ
PD
470kΩ
PU
1kΩ
PU or PD
470kΩ
PD
1kΩ
PU
470kΩ
Internal ROM boot(User Area Boot with USB download
–SD card I/F Ch0 + USB Device + EXTINT2E + EXTINT2F)
Load IPL2(program) from user area of eMMC connected to SD0 to internal
SRAM and jump to IPL2.
IPL2 is written through USB.
Internal ROM boot(User Area Boot with SD Ch1 download
–SD card I/F Ch0 + SD card I/F Ch1 + EXTINT2E + EXTINT2F)
Load IPL2(program) from user area of eMMC connected to SD0 to internal
SRAM and jump to IPL2.
IPL2 is written through SD1.
Internal ROM boot(external Serial Flash SPI Boot with USB download
–S-Flash I/F + USB Device + EXTINT2E + EXTINT2F + TIOCB01)
PU
1kΩ
PU
470kΩ
Load IPL2(program) from Serial Flash connected to S-Flash I/F to internal
SRAM and jump to IPL2.
IPL2 is written through USB.
Internal ROM boot(external Serial Flash SPI Boot with SD Ch1 download
–S-Flash I/F + SD card I/F Ch1 + EXTINT2E + EXTINT2F + TIOCB01)
Load IPL2(program) from Serial Flash connected to S-Flash I/F to internal
SRAM and jump to IPL2.
IPL2 is written through SD1.
Internal ROM boot(external Serial Flash QSPI Boot with USB download
–S-Flash I/F(QSPI) + USB Device + EXTINT2E + EXTINT2F + TIOCB01)
Fetch IPL2(program) from Serial Flash connected to S-Flash I/F.
IPL2 is written by using DO command directly through USB.
QSPI Boot
SD
PU
PD
Internal ROM boot(external Serial Flash QSPI Boot with SD Ch1 download
1kΩ
470kΩ
–S-Flash I/F(QSPI) + SD card I/F Ch1 + EXTINT2E + EXTINT2F + TIOCB01)
Fetch IPL2(program) from Serial Flash connected to S-Flash I/F.
IPL2 is written through SD1.
User Area Delete PD
PU
1kΩ
1kΩ
Internal ROM boot(User Area IPL2 delete
–SD card I/F Ch0 + EXTINT2E + EXTINT2F)
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