Nokia 9210i Servicehandbuch

PAMS

Technical Documentation

RAE-5 

3. RF+System Module KL8 

Page 3 – 31

Issue 1 04/02

Figure 7.

 XIP Flash Vpp connection

D351

D352

VPP

VPP

15 16

X400 

UI 
Connector

D300

MADLinda

 MPUGenIO1

Connection in UL8 Flex

XIP Flashes

PROG_EN

FLVPP

Synchronous DRAM is used as working memory and PDA display buffer
memory. MADLinda has a separate 16 bit wide interface for SDRAM device.
Interface supports also byte accesses. Supported memory clocking speeds are
13MHz and 52MHz.  MADLinda can execute code also from SDRAM.

The SDRAM is 64Mbits (8Mbyte) 104MHz device in 52–pin CSP (WBGA52).
Organisation of the memory is 4Mx16 with byte accesses possibility. Nominal
supply voltage Vcc is 2.8V and it is supplied from the common VBB voltage.

SDRAM supports self refresh mode. This mode is used in Deep Sleep mode
when all clocks are off to preserve SDRAM data. All memory contents are lost
when memory is un–powered, so when the battery is removed or the battery
voltage drops under the power off voltage.

DiscOnChip memory is used as Flash file system memory.  It is used partly as
user memory and partly to hold applications.

The DOC device comprises 128Mbit NAND–type flash memory array and a
memory controller inside.

Used DOC memory is a16MByte Mobile DiscOnChip device in 63–ball
LFRBGA.

Core voltage for the DOC is supplied from 2.8V VBB and I/O voltage from 1.8V
Vcore.