S5PV210_HARDWARE DESING GUIDE REV 1.0
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16. MODEM INTERFACE
This specification defines the interface between the Base-band Modem and the Application Processor for the data-
exchange of these two devices. For the data-exchange, the AP (Application Processor, S5PV210) has a
DPSRAM(Dual Port SRAM, 16KB) buffer (on-chip) and the Modem chip can access that DPSRAM buffer using a
typical asynchronous-SRAM interface.
16.1. Signal Description
Signal
I/O
Description
XmsmADDR[13:0]
I
MODEM (MSM) IF Address
XmsmDATA[15:0]
IO
MODEM (MSM) IF Data
XmsmCSn
I
MODEM (MSM) IF Chip Select
XmsmWEn
I
MODEM (MSM) IF Write enable
XmsmREn
I
MODEM (MSM) IF Read enable
XmsmIRQn
O
MODEM (MSM) IF Interrupt to MODEM
XmsmADVn
I
MODEM (MSM) IF Address Valid from MODEM Chip
16.2. Pin Connection Example
Figure 16-1) Modem I/F Pin connection example