EN 221
3139 785 31681
9.
Circuit- and IC description
Signal name
Pin no.
I/O
Short description
CLKEXT
H14
In
External clock input
CLKSEL
H15
In
External clock select
UVB7/Do7
J1
Out
UV output 7 / 656 Data output 7
UVB6/Do6
J2
Out
UV output 6 / 656 Data output 6
VSS
J3
Ground
VSS
J13
Ground
CLK
J14
Out
SDRAM Clock
WEN
J15
Out
SDRAM Write Enable Not. Active Low.
UVB5/Do5
K1
Out
UV output 5 / 656 Data output 5
UVB4/Do4
K2
Out
UV output 4 / 656 Data output 4
VDDC
K3
1.5V core supply voltage
VSS
K13
Ground
CASN
K14
Out
SDRAM Column Access Not. Active Low.
RASN
K15
Out
SDRAM Row Access Not. Active Low.
UVB3/Do3
L1
Out
UV output 3 / 656 Data output 3
UVB2/Do2
L2
Out
UV output 2 / 656 Data output 2
VSS
L3
Ground
VDDS
L13
3.3 V supply voltage
DQM
L14
Out
SDRAM Data mask
DQ16
L15
I/O
SDRAM Data bit 16
UVB1/Do1
M1
Out
UV output 1 / 656 Data output 1
UVB0/Do0
M2
Out
UV output 0 / 656 Data output 0
VDDS
M3
3.3 V supply voltage
VSS
M13
Ground
DQ14
M14
I/O
SDRAM Data bit 14
DQ15
M15
I/O
SDRAM Data bit 15
AVD
N1
PLL Supply Voltage
N.C.
N2
VDDS
N3
3.3 V supply voltage
VSS
N4
Ground
VSS
N5
Ground
VDDC
N6
1.5V core supply voltage
VSS
N7
Ground
VDDS
N8
3.3 V supply voltage
VDDC
N9
1.5 V core supply voltage
VSS
N10
Ground
VDDS
N11
3.3 V supply voltage
VSS
N12
Ground
VSS
N13
Ground