Pioneer DEH-2790MP Service Manual page 61

5
- Pin Functions(PE5454A)
QQ
3 7 63 1515 0
Pin No. Pin Name
1 AVREF
2 AVSS
3 RFOK
4 NC
5 EVDD
6, 7 NC
8 IC/FLMD0
9 VDD
10 REGC
11 VSS
12 X1
13 X2
reset
14
15 XT1
16 XT2
17 NC
18 NC
xint
19
20 NC
brst
21
22 BSI
23 BSO
bsck
24
25 FTXD
26 FRXD
27 BRXEN
bsrq
28
29 NC
30 DSCSNS
TE
L 13942296513
31 8EJ(S905)
32 12EJ(S904)
33 EVSS
34 EVDD
35, 36 SRAMLEVEL0, 1
37 EMPH
emph
38
39-42 NC
adena
43
44 LRCKOK
45 SRAMLEVEL2
46 CD3VON
47 CONT
xrst
48
49 VDCONT
50 ROMDATA
51 ROMCS
52 ROMCK
53 LOEJ
54 CLCONT
55 CDMUTE
56-58 NC
xcs
59
60 NC
xwait
61
62 CLKOUT
www
63 LOCK
64 NC
xwrite
65
66 NC
.
5
http://www.xiaoyu163.com
6
I/O Format
O C
I
I
I
C
I
I
O C
I/O /C
O C
I
I/O /C
I/O /C
I
I
I
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
I/O /C
O C
O C
O C
O C
O C
O C
I
O C
I
x ao u163
y
O
i
6
http://www.xiaoyu163.com
7
2 9
8
Function and Operation
A power supply Positive power supply(5V)
A power supply GND
Output of state of RFOK
Not used
E power supply Positive power supply
Not used
IC : VSS direct connection/FLMOD0 : Pull-down
Positive power supply(5V)
Connected to the capacity stabilizing output of the regulator
GND
Oscillator connection for mainclock
Oscillator connection for mainclock
System reset input
Connected to the oscillator for subclock
(connected to VSS via the resistor)
Connected to the oscillator for subclock(Open)
Connected to EVDD or EVSS via the resistor
Not used
CD LSI interruption signal input
Connected to VSS via the resistor
P-Bus reset input
P-Bus serial data input
P-Bus serial data output
P-Bus serial clock input/output
For flash rewriting(transmitted signal)
For flash rewriting(received signal)
It is possible to receive P-Bus
P-Bus service request demand
Not used
Q Q
Disc state sense input
3 6 7 1 3 1 5
Input of detection of 8 cm disc ejection
Input of detection of 12 cm disc ejection
E power supply GND
E power supply Positive power supply
SRAM level meter output
Emphasis information output
Emphasis information output
Not used
A/D reference voltage supply control output
(DOUT mute output)
SRAM level meter output
CD +3.3V power supply control output
Servo driver power supply control output
CD LSI reset control output
VD power supply control output
E2PROM data input/output
E2PROM chip selection output
E2PROM clock output
The direction change output of LOAD/EJECT
Driver input change output
CD mute control output
Not used
CD LSI chip selection output
Not used
CD LSI write control signal output
Internal system clock output(Open)
Spindle lock input
Not used co
CD LSI write control signal output
Not used
.
DEH-2790MP/XN/ID
7
8
9 4 2 8
0 5 8 2 9 9 4 2 8
m
8
9 9
A
B
C
9 9
D
E
F
61