Yamaha DSP-AX1/RX-V1 Service Manual page 52

DSP-AX1/RX-V1
IC24 : PM4007A (P.C.B. DSP)
AC-3 RF Demodulator
No. Name I/O
30 A6 O
31 A7 O
32 GND
33 VDD
34 A12 O
35 A14 O
36 WEB O
37 A13 O
38 A8 O
39 A9 O
40 GND
41 A11 O
42 OEB O
43 A10 O
44 DB7 I/O
45 DB6 I/O
46 DB5 I/O
47 DB4 I/O
48 DB3 I/O
49 DB2 I/O
50 DB1 I/O
51 DB0 I/O
52 VDD
53 GND
54 TI1 I
55 VIN I
56 VOUT O
57 TI2 I
58 TI3 I
59 TLDB I
60 TCK I
61 TRP O
62 TDO O
63 PDO O
64 TI4 I
65 PDDIS I
66 MUTO O
67 TI5 I
68 VLDY O
69 DASYO O
70 DAOUT O
71 DAIN I
72 DASEL I
73 TI8 I
74 C2F1 O
75 C2F0 O
76 C1F1 O
77 C1F0 O
78 MUTI I
79 VDD
80 GND
51
External RAM address output. Address 6
External RAM address output. Address 7
Ground terminal (0V)
+5V power supply
External RAM address output. Address 12
External RAM address output. Address 14 (MSB)
External RAM write enable signal, active at "L"
External RAM address output. Address 13
External RAM address output. Address 8
External RAM address output. Address 9
Ground terminal (0V)
External RAM address output. Address 11
External RAM output enable signal, active at "L"
External RAM address output. Address 10
External RAM data terminal. Data bus 7
External RAM data terminal. Data bus 6
External RAM data terminal. Data bus 5
External RAM data terminal. Data bus 4
External RAM data terminal. Data bus 3
External RAM data terminal. Data bus 2
External RAM data terminal. Data bus 1
External RAM data terminal. Data bus 0
+5V power supply
Ground terminal (0V)
IC test terminal, normally connected to VDD
VCXO input
VCXO output
IC test terminal, normally connected to GND (or unconnected)
IC test terminal, normally connected to GND (or unconnected)
IC test terminal, normally connected to GND (or unconnected)
IC test terminal, normally connected to GND (or unconnected)
Output terminal for IC test
Output terminal for IC test
Output terminal for phase comparator (tri-state)
IC test terminal, normally connected to GND (or unconnected)
Input terminal to control PDO output. Output ON at "L"
Muting output. Muting available at "H". Setting becomes "H" when "MUTI=H" or AC-3 is asynchronous.
IC test terminal, normally connected to GND (or unconnected)
Output terminal for IC test
Output terminal for IC test
Digital out output (serial data stream output)
Digital external input, through to DAOUT when DASEL is "H".
Digital out select
IC test terminal, normally connected to GND (or unconnected)
Terminal used to indicate error condition after C2 correction, whether completely corrected or not.
Terminal used to indicate error condition after C2 correction, number of errors at C2.
Terminal used to indicate error condition after C1 correction, whether any error exists at C1 or not.
Terminal used to indicate error condition after C1 correction, number of errors at C1.
Muting input. Muting available at "H"
+5V power supply
Ground terminal (0V)
Function