Pioneer AVIC-X3/XU/EW5 Service Manual page 56

1
Check 6: Is SDRAM I/F OK?
A
<Outline> In order to secure the MPEG stream data as the buffer,
the capacity of communication I/F SDRAM between the LSI and the memory is 128Mbit.
Be careful as XCSM, XWE, XCAS, XRAS and XSCM of IC1481 are called differently in IC1501,
namely NCSM, NWE, NCAS, NRAS, NCSM.
IC
1481
SDRAM
B
C
D
E
F
56
1
2
MA0~11
MDQ0~31
MCK
XWE (NWE)
XCAS (NCAS)
XRAS (NRAS)
XCSM (NCSM)
DQM0
DQM1
DQM2
DQM3
BA0
BA1
Fig 6.1: SDRAM I/F
AVIC-N4/XU/UC
2
3
IC1501
DVD-LSI
3
4
4