Ic Pin Function - Sony STR-DB830 - Fm Stereo/fm-am Receiver Service Manual

4-22. IC PIN FUNCTION DESCRIPTION
IC1401 CXD2712R AUDIO DSP(DIGITAL BOARD)
Pin No. Pin Name I/O
1 VSS3 —
2 – 5 SOA – SOD O
6, 7 ECJ0, ECJ1 I
8 — NC
9 XHDWR I
10 XHDRD I
11 V 4 —
SS
12 V 2 —
DD
13 HRDY O
14 XHDCS I
15 HA0 I
16 – 20 HD0 – HD4 I/O
21 V 5 —
SS
22 V 3 —
DD
23 – 25 HD5 – HD7 I/O
26 XRST I
27 – 30 FGP0 – FGP3 O
31 V 6 —
SS
32 – 40 ED0 – ED8 I/O
41 V 7 —
SS
42 V 4 —
DD
43 – 49 ED9 – ED15 I/O
50 TSTD I
51 V 8 —
SS
52 V 5 —
DD
53 – 60 ED16 – ED23 I/O
61 V 9 —
SS
62 – 69 ED24 – ED31 I/O
70 XOE O
71 V 10 —
SS
72 V 6 —
DD
73 CAS O
74 XWE O
75 RAS O
76 – 80 EA0 – EA4 I/O
81 V 11 —
SS
82 V 7 —
DD
83 –89 EA5 – EA11 I/O
90 EA12 O
Ground
Serial data output
Conditional jump input terminal (7pin Connected to ground)
No connection
HCIF data write
HCIF data read
Ground
+3.3V
HCIF ready signal Open drain
HCIF chip select
HCIF address input
HCIF data input/output
Ground
+3.3V
HCIF data input/output
Reset input "L": active
Test data output
Ground
External RAM data input/output
Ground
+3.3V
External RAM data input/output
Test data input "L" = normal "H" = test (Connected to ground)
Ground
+3.3V
External RAM data input/output
Ground
External RAM data input/output
External RAM output enable
Ground
+3.3V
External RAM column address strobe (Not used)
External RAM write enable (Not used)
External RAM raw address strobe
External RAM address output/test data input
Ground
+3.3V
External RAM address output/test data input
External RAM address output
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Description