Front Micom Pin Function (Main Board Ic701: Hms81C1816B) - Sony DVP-FX705 Service Manual
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- Operating instructions manual (55 pages) ,
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- Service manual (95 pages)
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7-2. FRONT MICOM PIN FUNCTION (MAIN BOARD IC701: HMS81C1816B)
Pin
number
1
BUZ/RB1
2
INT0/RB2
3
INT1/RB3
4
PWM0/COMP0/RB4
5
PWM1/COMP1/RB5
6
EC1/RB6
7
TMR20V/RB7
8
9
10
11
12
13
14
15
16
17
18
SRDYIN/SRDYOUT/RC3
19
RC4/SCK
20
RC5/SIN
TE
L 13942296513
21
RC6/SOUT
22
23
RD0/INT2
24
RD1/INT3
25
26
27
28
29
30
31
32
33
34
35
RA0/EC0
36
RA1/AN1
37
RA2/AN2
38
RA3/AN3
39
RA4/AN4
40
RA5/AN5
41
RA6/AN6
www
42
RA7/AN7
43
44
AN0/AVREF/RB0
.
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Name
I/O
(-)
N.C.
I
M_REQ (Main maicon/IC501 chip select)
I
POWER switch ON/OFF detection input
I
M_REQ (Main maicon/IC501 chip select)
(-)
N.C.
I
Remocon Select (Fixed at "L")
O
Remocon Select (Fixed at "L")
RE6
O
PWRCTL_3.3V (+3.3V power supply control)
RE5
O
/M_RESET (Master reset)
RE4
(-)
N.C.
RE3
I
I_FAST (Reference voltage of IC601 detection)
RE2
O
CH_EN (The change-control of DC-input or Battery-DC.)
RE1
I
HOLD switch detection.
RE0
I/O
Select2 (Fixed at "Open")
RC0
O
CHARGE LED, light control.
RC1
O
POWER LED, light control.
RC2
(-)
N.C.
(-)
N.C.
I
VFD_SCK (Main maicon/IC501 communication clock signal)
I
VFD_TXD (Main maicon/IC501 communication signal)
O
VFD_RXD (Main maicon/IC501 communication signal)
RC7
(-)
N.C.
I
The wakeup signal input by DC and Battery voltage.
I
REMOCON CONTROL (Remote controller signal input).
RD2
(-)
N.C.
RD3
(-)
N.C.
RD4
(-)
N.C.
RD5
(-)
N.C.
RD6
(-)
N.C.
RD7
(-)
N.C.
XIN
I
Connecting crystal resonator for main system click oscillation. (5MHz)
XOUT
O
Connecting crystal resonator for main system click oscillation. (5MHz)
RESET
I
System reset input.
VSS
-
Ground pin
(-)
N.C.
KEY_M switch (DISPLAY/COLOR-BRIGHT/TOP MENU/MENU/LCD MODE/
I
RETURN) input.
I
Function switch (F-SKIP/R-SKIP/PLAY/PAUSE/STOP) input.
I
BAT_SENSE (Battry input voltage detection)
I
DC_SENSE (DC input voltage detection)
I
THERMISTER (Thermister detection input.).
I
I_SENSE (Battery charge current sensor).
I
KEY_N switch (DOWN/UP/RIGHT/LEFT/PUSH ENTER) input.
x
ao
VDD
-
E+5V
y
(-)
N.C.
i
http://www.xiaoyu163.com
8
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3
6 7
1 3
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7-7
2 9
9 4
2 8
Description
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
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