Yamaha HTY-7040 Service Manual page 64

YSP-4000/YSP-40D/HTY-7040
No. Port Name
115 E2PROM_CS
116 Reserved
117 Reserved
118 Reserved
119 IN_SEL_CL
120 IN_SEL_DA
121 Reserved
122 Reserved
123 Reserved
124 Reserved
125 Reserved
126 Reserved
127 Reserved
128 XM_RX
129 XMPWR
130
131 XM_TX
132 VCC
133 DEST
134 VOL_DET1
135 +3.3_DET
136 VOL_DET2
137 Reserved
138 KEY0
139 KEY1
140
141 MODEL
142
143
144 SCL_400L
Key detection for A/D port
Pull-up resistance 10 k-ohms
R [ohm]
V [V]
KEY0 (138 pin/AN2) VOLUME +
KEY1 (139 pin/AN1) VOLUME -
Destination for A/D port
Pull-up resistance 10 k-ohms
R280 [ohm]
133 pin/AN7 [V]
Model for A/D port
YSP-4000/YSP-40D
R327 [ohm]
141 pin/AN0 [V]
64
Function Name
Port I/O
(P.C.B.)
PO113 Output
PO112 Input
PO111 Output
PO110 Output
PO03 Output
PO02 Output
PO01 Output
PO00 Output
PO157 Output
PO156 Output
PO155 Output
PO154 Output
PO153 Output
PI152 Output
PO151 Output
VSS
PO150 Input
VCC1
AN7 Input
AN6 Input
AN5 Input
AN4 Input
AN3 Input
AN2 Input
AN1 Input
AVSS
AN0 Input
VREF Input
AVCC Input
PO97 Input/Output
0 k 1.2 k
0-0.2 0.3-0.5
INPUT
–
J UC
– 39 k
3.1-3.3 2.5-2.8 2.2-2.5
HTY-7040
– 10 k
3.0-3.3 0.3-0.5
Detail of Function
Chip select signal to EEPROM
Pull down
Terminated
Terminated
Clock signal for analog input select
Data signal for analog input select
Terminated (VOUT_MUTE)
Terminated (V_MUTE)
Terminated (V_SEL3)
Terminated (V_SEL2)
Terminated (V_SEL1)
Terminated (V_SEL0)
Terminated
Data signal to XM
XM power supply control signal
Data signal from XM
Selection of destination input
Voltage of power supply detection input 1
+3.3V detection
Voltage of power supply detection input 2
Pull down
Key input 0
Key input 1
GND
Selection of model input
+3.3V
+3.3V
Clock input/output of HDMI serial port (400kHz)
KV A
24 k 10 k 15 k
1.5-1.8 1.8-2.1
B GE L
91 k 6.8 k
2.8-3.1 1.2-1.5