Sharp MD-SR60 Service Manual page 38

MD-SR60
IC401 RH-iX0341AWZZ: System Microcomputer (IX0341AW) (3/3)
System LSI expansion output port (LR37811)
Port Name Terminal Name Input/Output
Pin No.
52 EXPORT0 LDCNT1
53 EXPORT1 LDCNT2
54 EXPORT2 —
55 EXPORT3 EMPH1
56 EXPORT4 —
57 EXPORT5 OPTCNT
58 EXPORT6 DAPON
59 EXPORT7 ADPON
*1: List of TEST port settings
TEST1 TEST0
Details
H H Normal mode
H L No adjustment mode
L H Test mode
L L (Settings prohibited)
Output Recording head raising-lowering control output 1
Output Recording head raising-lowering control output 2
Output Not used.
Output Audio emphasis control output 1
Output Not used.
Output Optical digital input circuit control
Output D/A converter operation control output
Output A/D converter operation control output
*2: List of EMPH port settings
EMPH1 EMPH0
Details
H H fs=32K: 'ON'
H L fs=48K: 'ON'
L H OFF
L L fs=44.1K: 'ON'
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Function
See the separate table *3.
See the separate table *3.
(Open)
See the separate table *2.
(Open)
'H': Circuit operation ON
'H': Operation ON
'H': Operation ON
*3: List of LDCNT port settings
LDCNT1 LDCNT0
H H
H L
L H
L L
Remarks
Details
Brake
Drive UP
Drive DOWN
Output OFF