YGV639 Datasheet, PDF (8/34 Pages) YAMAHA CORPORATION – Video Controller 1 with Enhanced Functions

YGV639
● The meaning of [Attribute] column is as follows:
■ Analog: analog pin
■ tolerant: tolerant attribute represents that current does not flow to a power supply pin from the
voltage-applied pin, when voltage higher than supply voltage is applied to the pin.
However, since this pin cannot withstand 5V, it is necessary to make the voltage difference between the
pin and the power supply voltage less than 3.6V. Therefore, voltage exceeding 3.6V (maximum of
recommended operation voltage) cannot be applied to it without the supply of power (supply voltage =
0V).
■ 5V tolerant: 5V tolerant attribute means the pin has a withstand voltage of 5V. That is, 5V can be applied
to this pin when supply voltage is 0V.
Dual-purpose Pin
Sharing CPU Interface Pins
VC1E supports the two types of CPU interfaces: serial and parallel interfaces. Pins are shared by the
interfaces as follows:
Pin Name
D7-0
PS2-0
CS_N
RD_N
WR_N
WAIT_N
READY_N
INT_N
Parallel Interface
(SER_N=H)
D7-0
PS2-0
CS_N
RD_N
WR_N
WAIT_N
READY_N
INT_N
Serial Interface Chip Select
(SER_N=L)
Unused
Unused
SCS_N
SDIN
SCLK
SDOUT
Unused
INT_N
Sharing Timing-Controller Pins
VC1E has a built-in LCD timing controller and this function can be enabled by TCONE pin setting. The
following pins are shared depending on whether the timing controller is enabled or disabled.
Pin Name
DR5-0
DG5-0
DB5-0
DOTCLK
HCSYNC_N
VSYNC_N
BLANK_N
PLLCTL3
PLLCTL2
PLLCTL1
Timing controller disabled
(TCONE=L)
DR5-0
DG5-0
DB5-0
DOTCLK
HCSYNC_N
VSYNC_N
BLANK_N
PLLCTL3
PLLCTL2
PLLCTL1
Timing controller enabled
(TCONE=H)
DR5-0
DG5-0
DB5-0
DOTCLK
CLKV
POL
STARTV
LOADH
STARTH
OUTENV
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