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PRELIMINARY
MODEM INTERFACE
S3C6400X
RISC MICROPROCESSOR
23-4
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
AP Booting for MODEM
AP Booting for MODEM means that AP provides the boot area (8Kbyte memory) for MODEM.
MODEM can boot using internal Dual-Port SRAM memory inside MODEM_IF block. In this case, AP should
provide ‘MODEM Reset pin’ and AP should complete boot operation. Also, AP should download the MODEM
boot code into its Dual-Port SRAM. If the chip select of the MODEM is connected to ‘XhiCSn’, MODEM can boot
without its external Boot Memory (NAND).
Modem
(Host)
AP
(Client)
Boot Memory
(NAND)
Addr, Control
SRAM I/F por
t
Modem
Interface
data
Interrupt
Reset
Boot Memory
(NAND)
Figure 23-2 MODEM interface for AP Booting for MODEM