YGV638 Datasheet, PDF (7/26 Pages) YAMAHA CORPORATION – a pattern graphic controller with an on-chip VRAM and the ample drawing performance enables high-resolution animated GUIs on WVGA display panels.

■ Pin Attributes
YGV638
· Sharing Pins
On VC2,
- the CPU interface pins change functions depending on which CPU interface, parallel or serial, is used.
- the digital video input pins change functions depending on the digital video input format used.
- the monitor interface pins change functions when the integrated LCD timing controller is used.
i) Sharing of CPU Interface Pins
The VC2 supports the 8-bit parallel interface or serial interface. The correspondence between CPU
interface and the shared pin is 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
(SER_N=L)
Not used (Fixed to “H” or “L”)
Not used (Fixed to “H” or “L”)
SCS_N
SDIN
SCLK
SDOUT
Not used (N.C.)
INT_N
ii) Sharing of Digital Video Input Pins
VC2 supports the digital video input of RGB666, 16bit YCrCb, and 8bit YCrCb format. The
correspondence between the format of digital video and the pins are as follows.
Pin Name
DRI2
DRI3
DRI4
DRI5
DRI6
DRI7
DGI2
DGI3
DGI4
DGI5
DGI6
DGI7
DBI2
DBI3
DBI4
DBI5
DBI6
DBI7
DGCKIN
DVSIN_N
DHSIN_N
RGB666
(DVIF=2’b00)
DRI2
DRI3
DRI4
DRI5
DRI6
DRI7
DGI2
DGI3
DGI4
DGI5
DGI6
DGI7
DBI2
DBI3
DBI4
DBI5
DBI6
DBI7
DGCKIN
DVSIN_N
DHSIN_N
8bit YCrCb
(DVIF=2’b01)
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
DGCKIN
Not used
Not used
16bit YCrCb
(DVIF=2’b10)
CIN0
CIN1
CIN2
CIN3
CIN4
CIN5
CIN6
CIN7
Not used
Not used
YIN0
YIN1
YIN2
YIN3
YIN4
YIN5
YIN6
YIN7
DGCKIN
DVSIN_N
DHSIN_N
Pull up the “Not used” pins to “H” or “L” outside the device.
4GV638A21
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