Baseband Electrical Interfaces: Memory - Nokia RM-761 Service Manual

RM-761; RM-799; RM-800
System Module
Figure 58 Serial display connection
Quantum supports both serial and parallel displays, as well as combinations of the two. The figure below
shows how the display interface signals in XGOLD213 are mapped to the parallel and serial interfaces of the
display(s). The Rx resistor is only needed when using dual displays, where one has serial and the other a
parallel interface. The resistor will limit the maximum achievable bit rate in the receiving direction (LCD read)
to app 3.25 Mb/s due to the RC filter constant created by Rx and the DIF_D1 input capacitance (Assuming Rx
= 2.2 kOhm and Cin = 10 pF). In single serial display applications Rx should be shorted (MESSI_CMT0 and
MESSI_CMT1 shorted).
In a dual display configuration, a GPIO must provide the chip select output for the serial connected display.
Figure 59 Display interface (parallel and serial coexist)

Baseband electrical interfaces: Memory

The memory subsystem of the Quantum supports the following features:
• Up to 512Mbit NOR flash memory
• 1.8V supply voltage for low power operation
• 16 bit bus width, A/D Muxed
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