Pin Functions
Pin No.
Pin name
1
VREF
LC72722PMS
Function
Reference voltage output (Vdda/2)
2
MPXIN
Baseband (multiplexed) signal input
I/O
Output
Input
Pin circuit
Vdda
Vssa
Vdda
Vssa
5
FLOUT
Subcarrier output (filter output)
Output
Vdda
7
CIN
3
Vdda
4
Vssa
12
XOUT
13
XIN
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)
Input
Vssa
VREF
Output
XIN
Vddd
XOUT Vssd
7
T1
8
T2
Test input (This pin must always be connected to ground.)
Test input (standby control)
0:Normal operation, 1:Standby state
(crystal oscillator stopped)
Input
S
Vssd
9
T3(RDCL)
Test I/O (RDS clock output)
10
T4(RDDA)
Test I/O (RDS data output)
11
T5(RSFT)
Test I/O (soft-decision control data output)
T6
16
(ERROR/57K/BE1)
Test I/O (error status, regenerated carrier, error block count)
T7
Test I/O
17
(CORREC/ARI-ID/BE0) (error correction status, SK detection, error block count)
18
SYNC
Block synchronization detection output
I/O*
Vssd
19
RDS-ID
20
DO
RDS detection output
Data output
Output
Vssd
21
CL
22
DI
23
CE
Clock input
Data input
Chip enable
Serial data interface (CCB)
Input
S
Vssd
24
SYR
Synchronization and RAM address reset (active high)
14
Vddd
Digital system power supply (+5 V)
15
Vssd
Digital system ground
Note : * Normally function as an output pin. Used as an I/O pin in test mode, which is not available to user
applications.
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