Sony MT-MZR70-165, MZ-R90/R91 service manual IC501, SN761056, IC302, NJM2173, IC303, TA2131FL

6-8. IC BLOCK DIAGRAM

	IC501	SN761056
						44	ADIP
			A+B+C+D		TWpp	43	S-MON
			I+J		PK/BTM
TE	1		NPP		Aw
			TON		CSLO
REXT	2		CSL		VREF075
Wpp-LPF	3		Aw+Dw	S-MONITOR	A-C
			TON Peak		D-C
VREF	4
			TON Botm		Malfa
C	5
			ADIP		Mij
D	6		TE		AwBPF
		TE	TEMP		Dw
					DwBPF
D-C	7					42	FE
		Tpp/Wpp				41	ABCD
						40	AVCC
						39	OFC-1
						38	OFC-2
						37	PS
					RF	36	LP
Iy	8					35	EQ
Ix	9					34	AGND
		FE				33	RFOUT
Jx	10
						32	CCSL2
Jy	11
			ABCD			31	VC
A	12					30	VREF075
A-C	13				PEAK/BOTM	29	PEAK
B	14					28	BOTM
TON-C	15
CIG	16					27	DGND
CDN	17
				T-ON		26	OFTRK
PD-I	18
PD-NI	19	APC
PD-O	20
				SERIAL		25	XRST
						24	SCK
				I/F
						23	SBUS
		ADIP
ADIP	21
DVDD	22

IC302	NJM2173
OUT2	DC CUT2	IN2	MIC V+2	GV	STBY V+
14	13	12	11	10	9	8
	–
	+			BIAS

+
–				REG
1	2	3	4	5	6	7
OUT1	DC CUT1	IN1	MIC V+1	REG	NOISE	GND

	IC303		TA2131FL
		PWSTB	MUTE	RST SW	BEEP IN	GND	VREF IN
		18	17	16	15	14	13
		PW	MT	BST	BEEP		V REF	12	VREF
		SW	SW	SW
								11	LPF1
TC MT	19
VCC1	20				ADD
VINR
	21							10	BST NF1
							BST1
VINL	22							9	LPF2
BEEP	23	PW		PW		BST2		8	BST NF2
OUTB		A		B
BEEP								7	BST OUT
	24
OUTA							BST
							AGC
	1	2	3	4		5	6
	+B	LOUT	PWR GND	ROUT		DET	AGC IN
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