Integra NAC-2.3 Service Manual page 32

DESCRIPTION OF MAIN MICROPROCESSOR - 1
Q7001, M30624FGAFP
No. Symbol I/O
1 OSDDA O
2 OSDCL O
3 ~OSDCS O
4,5 - O
6 ~IRIN I
7 ~IRMAIN I
8 BYTE I
9 CNVSS I
10,11 - O
12 ~RESET I
13 XOUT O
14 VSS
15 XIN I
16 VCC
17 ~NMI I
18 - O
19 RDSCLK I
20 ~POFF I
21~24 - O
25 STBLED O
26 - O
27 ~FLPOWER O
28 ~FLTEST O
29 RTCSCL O
30 RTCSDA I/O
31~34 - O
35 NETTX O
36 NETRX I
37 - O
38 ~ETPOWER O
39 ~DITPD O
40 ~DITCS O
41 (~EPM) I
42 - O
43 XPOR O
44 ~DARST O
45 DACS O
46 (~CE) I
47 DIGCL O
48 DAMUT O
49 DIGDO O
50~54 - O
55 VOLDA O
56 VOLCL O
Act. Description (Function)
H Data of OSD communication
CLK Clock of OSD communication
L To select OSD communication
-
L Inflared signal from rear panel (IR IN)
L Inflared signal from front panel
H VSS
H Change of prosessor mode
-
L Reset
Crystal oscillator, connect to 16MHz oscillator
GND
Crystal oscillator, connect to 16MHz oscillator
Power supply, 5V
L -
-
CLK RDS clock
L Detect power failure
-
H STANDBY LED
-
L Control of FL power supply
L FL tube test
CLK Clock of RTC IC
H Data of RTC IC
-
L Communication of network microprocessor
L Communication of network microprocessor
-
L Control of power supply for ETHER IC
L DIT power down
L To select DIT
L Connect to VSS
-
L EP7312 reset
L DAC reset
L To select DAC
L Connect to Vcc
CLK Common clock of DIT/DAC
L Muting of DAC
H Common data of DIT/DAC
-
H Serial data of TC9412 volume IC
CLK Serial clock of TC9412 volume IC
NAC-2.3