
ADM5120 Interface Description
Pin Name
BGA Ball
PQFP Pin#
Type Descriptions
0: BGA package
1: 208 PQFP package
(6) A[4:3]: Can be pulled up and down
as
following:
PLL frequency setting
00: 175MHz (Default)
01: 200MHz
1x: Reserved
(7)A[2]:
0: Enable AutoMDIX
1: Disable AutoMDIX (Default)
(8) A[1]:
Default value: 0
1: NAND boot enable
0: NAND boot disable
(9) A[0]:
Default value: 0
1: Simulation mode
0: Normal operation
2.2.6 SDRAM Control Signals
Pin Name
BGA Ball
PQFP Pin#
Type Descriptions
CLK_OUT
Y5
62
O
SDRAM clock, the frequency is set by
A[4:3]
00: 87.5MHz (Default)
01: 100MHz
Note:
1=pull up, 0=pull down
SDRAM_CS0_N
U8
64
O
SDRAM chip select 1
RAS_N
T8
60
O
Raw address strobe, active low
CAS_N
V6
59
O
Column address strobe, active low
SDRAM_CS1_N W5
58 O
SDRAM chip select 1
DQM[3:0]
T11, U12, T7, Y4
83, 84, 55, 56
O
Data mask output to SDRAM
F_CS0_N
T20
122
O
Chip select for external memory, like
flash, bank0, active low
F_CS1_N
N2
NA
O
Chip select for external memory, like
flash, bank1, active low
F_OE_N
M16
121
O
Output enable for external memory
banks, active low
WE_N T19
120
O
Write Enable for external memory
banks and SDRAM
2.2.7 UART
ADMtek Inc.
2-8
Pin Name
BGA Ball
PQFP Pin#
Type Descriptions
UDCD
R19
123
I
UART0 Data carrier detect (modem
status input), active low
Can also be used as GPIO
UDSR
P18
124
I
UART0 Data set ready (modem status
input), active low
Can also be used as GPIO