YGV639 Datasheet, PDF (6/34 Pages) YAMAHA CORPORATION – Video Controller 1 with Enhanced Functions

YGV639
■ Pin Functions
● Pin Table
CPU Interface (23)
Pin Name
D7-0
PS2-0
CS_N
RD_N
WR_N
WAIT_N
READY_N
INT_N
SER_N
SCS_N
SDIN
SDOUT
SCLK
RESET_N
Num. I/O
Function
8 I/O CPU data bus
3
I CPU port selection
1
I Chip select (dual-purpose pin)
1
I Read strobe (dual-purpose pin)
1
I Write strobe (dual-purpose pin)
1
OT
CPU bus wait
(3-state output) (dual-purpose pin)
1
OT
CPU bus ready
(3-state output)
1
OD
Interrupt
(open drain)
1
I CPU interface selection
1
I
Serial interface
Chip select (dual-purpose pin)
Serial interface
1
I Data input
(dual-purpose pin)
Serial interface
1 OT Data output (3-state output)
(dual-purpose pin)
1
I
Serial clock input
(dual-purpose pin)
1
I$ Reset
Attribute
5V tolerant
5V tolerant
5V tolerant
5V tolerant
5V tolerant
5V tolerant
5V tolerant
5V tolerant
-
5V tolerant
5V tolerant
Power
Supply
Group
VD5
VD5
VD5
VD5
VD5
VD5
Level Drive
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
4mA
4mA
VD5 CMOS 4mA
VD5 CMOS 4mA
VD3 CMOS
VD5 CMOS
VD5 CMOS
5V tolerant
5V tolerant
Tolerant
VD5 CMOS 4mA
VD5 CMOS
VD3 CMOS
Pattern Memory Interface (45)
Pin Name
MD15-0
MA25-0
MOE_N
MWE_N
RAHZ_N
Num.
16
26
1
1
1
I/O
Function
I/O Pattern memory Data Bus
OT
Pattern memory Address Bus
(3-state output)
OT
Pattern memory Output Enable
(3-state output)
OT
Pattern memory Write Strobe
(3-state output)
I Pattern memory high-impedance switching
Power
Supply
Group
VD3
Level Drive
LVCMOS 4mA
VD3 LVCMOS 4mA
VD3 LVCMOS 4mA
VD3 LVCMOS 4mA
VD3 LVCMOS
Video Interface (5)
Pin Name
VINP
VINM
VREF0
VREFP
VREFN
Num.
1
1
1
1
1
I/O
Function
I Analog video input
I Test input pin
O ADC reference pin
O Plus reference voltage pin for ADC
O Minus reference voltage pin for ADC
Attribute
Analog
Analog
Analog
Analog
Analog
Power
Supply
Group
AVDD
AVDD
AVDD
AVDD
AVDD
Level Drive
Analog
Analog
Analog
Analog
Analog
6