YGV638 Datasheet, PDF (8/26 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
iii) Sharing of Monitor Interface Pins
VC2 has an on-chip LCD timing controller. The function of the following pins depends on whether or not
the timing controller is used, as shown below:
Pin Name
DRO7-0
DGO7-0
DBO7-0
DOTCLK
HCSYNC_N
VSYNC_N
BLANK_N
LOADH
STARTH
OUTENV
Timing controller not used
(TCONE=0)
DRO7-0
DGO7-0
DBO7-0
DOTCLK
HCSYNC_N
VSYNC_N
BLANK_N
Not used
Not used
Not used
Timing controller used
(TCONE=1)
DRO7-0
DGO7-0
DBO7-0
DOTCLK
CLKV
POL
STARTV
LOADH
STARTH
OUTENV
● Pin Assignments
157 MD1
158 MD8
159 MD0
160 VSS
161 RAHZ_N
162 APLLVDD
163 NC
164 APLLVSS
165 VSS
166 DRO0
167 DRO1
168 DRO2
169 VDD33
170 DRO3
171 DRO4
172 DRO5
173 DRO6
174 VSS
175 DRO7
176 DGO0
177 DGO1
178 DGO2
179 VDD33
180 DGO3
181 VDD18
182 DGO4
183 VSS18
184 DGO5
185 DGO6
186 VSS
187 DGO7
188 DBO0
189 DBO1
190 DBO2
191 VDD33
192 DBO3
193 DBO4
194 DBO5
195 DBO6
196 DBO7
197 VSS
198 DOTCLK
199 VSYNC_N
200 HCSYNC_N
201 BLANK_N
202 VDD33
203 LOADH
204 STARTH
205 OUTENV
206 SER_N
207 VSS
208 PLLVSS
4GV638A21
<208pin LQFP Top View>
8
MD16 104
MD24 103
MD17 102
VDD33 101
MD25 100
MD18 99
MD26 98
MD19 97
MD27 96
VSS 95
MD20 94
MD28 93
MD21 92
MD29 91
MD22 90
VDD33 89
MD30 88
MD23 87
MD31 86
DBI7 85
VSS 84
DBI6 83
DBI5 82
VSS18 81
DBI4 80
VDD18 79
DBI3 78
DBI2 77
VDD33 76
DGI7 75
DGI6 74
DGI5 73
DGI4 72
DGI3 71
VSS 70
DGI2 69
DRI7 68
DRI6 67
DRI5 66
VDD33 65
DRI4 64
DRI3 63
DRI2 62
DHSIN_N 61
DVSIN_N 60
DGCKIN 59
VSS 58
AVDD33 57
AVDD18 56
AVSS 55
ATESTIN 54
ABIN 53