Serial I/O Interface; Power Supply Filtering - Classe Audio SSP-75 Service Manual

INTERFACE
1
3
5
7
9
10Pin IDC header
X15
34pin IDC header
1
3
5
7
9
11
13
15
RS232_RXD
17
RS232_TXD
19
+5D 21
23
+5A 25
27
29
31
-5A
33

Power supply filtering

Bypass capacitors
X14
2
OSD_CVID_OUT
4
6
ZONE_1_CVID_SW
8
10
Y/C->Cs_BUF
2
CONTROL_MOSI
4
CONTROL_SCLK
6
OSD_I/O_RCK
8
I/O_ENABLE
10
OSD_SPI_E
12
VIDEO_SPI_E
14
VSYNC_OUT
16
COMP_ACT
18
SVIDEO_ACT
20
ZONE1_CVID_ACT
22
TP4
+15A
24
26
28
-15A
30
32
34
+15A +5A
+5D
-15A -5A
+5D
C68 C67
100nF 100nF

Serial I/O interface

IC13
74HC595
16
VCC
14 15
CONTROL_MOSI SERIN Q0
+5D 1
Q1
11 2
CONTROL_SCLK SRCLK Q2
10 3
SRCLR Q3
4
Q4
12 5
OSD_I/O_RCK RCLK Q5
13 6
I/O_ENABLE G Q6
7
Q7
9
SEROUT
8
GND
SPI buffer
IC12
74HC244
+5D
20
VCC
2 18
CONTROL_MOSI 1A1 1Y1
4 16
CONTROL_SCLK 1A2 1Y2
6 14
1A3 1Y3
8 12
1A4 1Y4
17 3
2A1 2Y1
15 5
2A2 2Y2
13 7
2A3 2Y3
11 9
2A4 2Y4
1
OSD_SPI_E 1G
19 10
VIDEO_SPI_E 2G GND
RS232 Connector
RS232_RXD
RS232_TXD
R7
0
X1
Amplite 787200-1
+5D
+5D
R105
10k
OSD_RESET
OSD_CS
COMP_SW_ST
SVIDEO_SW_ST
OSD_SW_ST
CVID/SVIDEO
OSC_SEL
TP6
OSD_MOSI
OSD_SCLK
VIDEO_MOSI
VIDEO_SCLK
+5D
SSP-75
Classé - 38