Denon S-81 Service Manual page 19

Pin Functions
Pin No. Pin name
1 VREF
2 MPXIN
5 FLOUT
6 CIN
3 Vdda
4 Vssa
12 XOUT
13 XIN
7 T1
8 T2
9 T3 (RDCL)
10 T4 (RDDA)
11 T5 (RSFT)
16 T6 (ERROR/57K/TP/BE1)
17 T7 (CORREC/ARI-ID/TA/BE0)
18 SYNC
19 RDS-ID
20 DO
21 CL
22 DI
23 CE
24 SYR
14 Vddd
15 Vssd
Note: Normally function as an output pin. Used as an I/O pin in test mode, which is not available to user applications.
Function
Reference voltage output (Vdda/2)
Baseband (multiplexed) signal input
Subcarrier output (filter output)
Subcarrier input (comparator input)
Analog system power supply (+5 V)
Analog system ground
Crystal oscillator output (4.332/8.664 MHz)
Crystal oscillator input (external reference signal input)
Test input (This pin must always be connected to ground.)
Test input (standby control)
0: Normal operation, 1: Standby state (crystal oscillator stopped)
Test I/O (RDS clock output)
Test I/O (RDS data output)
Test I/O (soft-decision control data output)
Test I/O (error status output, regenerated carrier output,
TP output, error block count output)
Test I/O (Error correction status output, SK detection output,
TA output, error block count output)
Block synchronization detection output
RDS detection output
Data output
Clock input
Serial data interface (CCB)
Data input
Chip enable
Synchronization and RAM address reset (active high)
Digital system power supply (+5 V)
Digital system ground
19
S-81/S-81DAB
I/O Pin circuit
Vdda
Output
Vssa
Vdda
Input
Vssa
Ð
Output
+
Vdda
Input
Vssa
V REF
Ñ Ñ
Ñ Ñ
Vddd
Output
X IN
X OUT
Vssd
Input
S
Vssd
A12370
I/O
Vssd
Output
Vssd
S
Input
Vssd
Ñ Ñ
Ñ Ñ
A12365
A12366
A12367
A12368
A12369
A12371
A12372
A12373