Inhaltsverzeichnis
Werbung
GRUNDIG Service
IC-Blockdiagramme / IC Block Diagrams
AML3250
Name
Type
SDRAM1 (MPEG)
m1_a[10:0]
O
m1_ba
O
m1_cas_n
O
m1_clko
O
m1_cs_n[0]
O
m1_cs_n[1]
O
m1_d[15:0]
B
m1_dqm
O
m1_ras_n
O
m1_we_n
O
SDRAM2
(Host Memory)
m2_a[11:0]
B
m2_ba0
O
m2_cas_n
O
m2_clko
B
m2_d[15:0]
B
m2_dqm[1:0]
O
m2_scs0_n
O
m2_ecs_n
O
m2_eoe_n
O
m2_ras_n
O
m2_we_n
O
GPIO / External
Interface
ad[7:0]
B
as
B
cs_n
B
wait_n
B
wrn_rwn
B
rdn_e
B
wclk
B
x_int
B
Pin
Description AML3250
*
Adress bus, pins: 16...19, 21, 22, 24, 25, 27...30
15
Bank select
32
Column adress strobe
174
Clock
34
Chip select 0
35
Chip select 1
*
SDRAM data bus, pins: 162...164, 166...168, 170...172, 176...178, 180...182, 184
14
Input / output mask
33
Row address strobe
13
Write enable
*
Adress bus, pins: 134,135, 137...140, 142...146, 148
These signals are also used to configure the chip at reset.
133
Bank select. Also used as a chip select when the decoder is configured to interface to static RAMs.
152
Column address strobe
130
Clock
*
Data bus, pins: 108...111, 113...117, 119...123, 125, 126
149, 150
Input / output mask
132
SDRAM chip select. This signal is low when the SDRAM is selected.
128
EPROM chip select. This signal is low when the EPROM is selected.
127
EPROM output enable
151
Row address strobe
153
write enable (active low)
83...87, 92...94
External interface data, GPIO[7:0]
95
Address strobe, GPIO[8]
96
Chip select, GPIO[11]
97
Wait, GPIO[12]
98
Intel processor: WR_n, Motorola R/W_n, GPIO[10]
99
Intel Processor: RD_n, Motorola (E)nable, GPIO[9]
100
Wait clock, GPIO[13]
101
Interrupt, GPIO[14]
2 - 13
GDP 2200
Werbung
Inhaltsverzeichnis
