Manualsbrain.com
  1. Manuals
  2. Brands
  3. Nokia
  4. 6255
  5. Service Manual

Nokia 6255 Service Manual

Download
Page of 42
Nokia Customer Care
6255/6255i/6256/6256i (RM-19)  
Schematics / Layouts 
6255/6255i/6256/6256i (RM-19)
Issue 2 05/2005
 ©2005 Nokia Corporation       Company Confidential
Page A-8
SDRAM Memory
68R
R3000
H8
_CS
G10
_RAS
_WE
G8
NC
F8
F3
NC
NC
G3
H3
NC
E2
NC
NC
E1
UDQM
F2
_CAS
G9
D8
D9
E8
E3
D2
F9
LDQM
E10
NC
NC
E9
C2
C3
B2
B3
A2
B9
C8
C9
H1
BA0
H9
H10
BA1
CKE
G1
G2
CLK
A9
B8
D3
11
H2
K8
K9
K2
K3
J1
J2
J3
A1,F1,K1=
A8,B1,C10,D1=
VIO
A10,F10,K10=
SDRAM 4Mx16
A
D3000
K4M64163PH-VG75
DATA I/O
4194303
0
0
J9
J10
J8
C3001
100n
VIO
GND
A3,B10,C1,D10=
GND
10n
C3000
J3000
GND
GND
SDRDA(4)
SDRDA(5)
SDRDA(6)
SDRDA(7)
SDRDA(8)
SDRDA(9)
SDRDA(10)
SDRDA(11)
SDRDA(12)
SDRDA(13)
SDRDA(14)
SDRAD(15:0)
VIO
SDRAD(0)
SDRAD(1)
SDRAD(10)
SDRAD(11)
SDRAD(2)
SDRAD(3)
SDRAD(4)
SDRAD(5)
SDRAD(6)
SDRAD(7)
SDRAD(8)
SDRAD(9)
SDRCTRL(5)
SDRCTRL(6)
SDRCTRL(1)
SDRCTRL(0)
SDRCTRL(4)
SDRAD(13)
SDRAD(12)
SDRCTRL(2)
SDRCTRL(8)
SDRCTRL(3)
SDRCTRL(8:0)
SDRDA(15:0)
SDRDA(15)
SDRDA(0)
SDRDA(1)
SDRDA(2)
SDRDA(3)