Modem Interface - Samsung S5PV210 Hardware Design Manual

S5PV210_HARDWARE DESING GUIDE REV 1.0

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
XmsmADDR[13:0]
XmsmDATA[15:0]
XmsmCSn
XmsmWEn
XmsmREn
XmsmIRQn
XmsmADVn
16.2. Pin Connection Example
I/O Description
I MODEM (MSM) IF Address
IO MODEM (MSM) IF Data
I MODEM (MSM) IF Chip Select
I MODEM (MSM) IF Write enable
I MODEM (MSM) IF Read enable
O MODEM (MSM) IF Interrupt to MODEM
I MODEM (MSM) IF Address Valid from MODEM Chip
Figure 16-1) Modem I/F Pin connection example
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