Sharp SD-AT1000 Service Manual page 54

SD-AT1000
ICA100, ICA200, ICA300 RH-iX0498AWZZ: 7th Order
Port Name
Pin No.
1 VDDL
2 OUTL (+)
3 OUTL (–)
4 GNDD
5 OUTR (–)
6 OUTR (+)
7 VDDR
8 VDDX
9 XI
10 XO
11 GNDX
12 MCK
13 TEST
14 NFR1 (+)
15 NFR2 (–)
16 GNDA
17 Rch IN
18 Rch Vref
19 Lch Vref
20 Lch IN
21 RESET
22 NFL2 (–)
23 NFL1 (+)
24 VDDA
1
VDDL
2
OUTL(+)
3
OUTL(–)
4
GNDD
5
OUTR(–)
6
OUTR(+)
7
VDDR
8
VDDX
9
XI
10
XO
11
GNDX
12
MCK
Input/Output
Input L channel digital output section power terminal.
Output L channel forward output terminal.
Output L channel reverse output terminal.
— Digital output section ground terminal.
Output R channel reverse output terminal.
Output R channel forward output terminal.
Input R channel digital output section power terminal.
Input Oscillation section power terminal.
Input Quartz oscillator connection terminal. Clock necessary for the system is generated.
Output Quartz oscillator connection terminal. Clock necessary for the system is generated.
— Oscillation section ground terminal.
Output System clock output terminal.
Input Test terminal. As usual, it is used at "L".
Input R channel forward signal feedback input terminal.
Input R channel reverse signal feedback input terminal.
— Analog ground terminal for AD converter.
Input R channel analog input terminal.
Input Reference voltage terminal for R channel.
Input Reference voltage terminal for L channel.
Input L channel analog input terminal.
Input Reset terminal. It is reset with "L".
Input L channel reverse signal feedback input terminal.
Input L channel forward signal feedback input terminal.
Input Analog current terminal for AD converter.
24
VDDA
23
NFL1(+)
22
NFL2(–)
21 RESET
20
Lch IN
Lch Vref
19
18 Rch Vref
17
Rch IN
16
GNDA
15
NFR2(–)
14
NFR1(+)
13
TEST
Figure 54 BLOCK DIAGRAM OF IC
Modulation Conversion LSI (IX0498AW)
Function
24 23 22 21 20
Lch 7th order
Modulation Circuit
Comparator
Amplitude Doubling Amplitude Doubling
Converter
1 2 3 4 5
– 54 –
19 18 17 16
Rch 7th order
Modulation Circuit
Comparator
Oscillator
Converter
6 7 8 9
15 14 13
10 11 12