DVR-8100
9
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Pin Description
-
VCC
I
Video input (Composite or Y)
-
YC MIX select (Unused)
I
Croma input (Open)
-
Clamp select (Connected to GND)
O
Mute select (Unused)
-
GND
I
Component input
-
Power select (+5V)
-
VEE (-5V)
21,22,24
16,18,20,
CrOUT, CbOUT,
23,25,27
YOUT2,YOUT1,
O
Video output
COUT,VOUT
23,25,27
YOUT1,
O
Video output (Open)
COUT,VOUT
17,26
PS2,PS1
-
Power save (Connected to GND)
A
Q
L
H
H
L
Pin No.
Pin Name
I/O
Pin Description
1,3,5,9,
A0 to A5
I
Data Inputs
11,13
2,4,6,8,
Q0 to Q5
O
Data Outputs
10,12
7
GND
-
Ground
14
VCC
-
Positive Supply Voltage
Pin No.
Pin Name
I/O
Pin description
38
CLK
I
The system clock input. all other inputs are registered to the SDRAM on
the rising edge of CLK.
37
CKE
-
Controls internal clock signal and when deactivated, the SDRAM will be one
of the states among power down, suspend or self refresh.
19
CS
-
Enables or disables all inputs except CLK, CKE, and DQM.
20,21
BA0,BA1
-
Selects bank to be activated during RAS activity.
Selects bank to be read/written during CAS activity.
22~26
A0~A11
-
Row address : RA0~RA11, Column address : CA0~CA7
29~35
Auto-precharge flag : A10
16,17,18
WE,CAS,RAS
-
WE, CAS and RAS define the operation.
15,39
LDQM,UDQM
I/O
Controls output buffers in read mode and masks input data in write mode.
2,4,5,7,8,10
11,13,42,44
DQ0~DQ15
I/O
Multiplexed data input/output pin.
45,47,48,50
51,53
1,3,9,14,27
VCC/VCC Q
-
Power supply for internal circuits and input buffers.
43,49
6,12,28,41,
VSS/VSS Q
-
Ground terminal.
46,52,54
36,40
NC
-
Unused.
4. Pin Description of IC's
4-1 64 Bit SDRAM : HY57V641620HGT (DVD & VIDEO IC63)
4-2 HEX Inverter (Single Stage) : M74HCU04 (DVD & VIDEO IC67)
Truth Table
4-3 Video Driver : MM1540AF (DVD & VIDEO, IC68)
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