GE IC697VAL348 user manual Digital-to-Analog Converter Board Functional Block Diagram

4

Figure 4-1: Digital-to-Analog Converter Board Functional Block Diagram

PROGRAM	OPERATION
	AND CONTROL
CONTROL UPDATE	LOGIC
16-BIT
DAC	CH 1
NO. 1

DAC

SEL

16-BIT
DAC	CH 2
NO. 2

DAC

SEL

16-BIT
DAC	CH 3
NO. 3

DAC

SEL

EXTERNAL

UPDATE

16-BIT
DAC	CH 5
NO. 5

DAC

SEL

16-BIT
DAC		CH 6
NO. 6
	DAC
	SEL
16-BIT
DAC		CH 7
NO. 7
	DAC
	SEL

V C L M O O

EM G b P I u A C s T

I B I L I T Y

16-BIT

DAC

NO. 4

DAC

SEL

DATA BUS

ADDRESS

REGISTER

CH 4

CH 1

8

CH 8

16-BIT
DAC		CH 8
NO. 8
	DAC
	SEL

P3

CH 1

ANALOG

OUT

ISOLATION

SWITCHES CH 8

CSR	TEST
	MODE
	SELECT AIN
	TEST (SAIT)
	SELECT A0
	TEST (SA0T)
	CH 8 CH 1

	4	8-CHANNEL
AOUT ADDR SELECT		MUX

P2

DUAL		A0IN TEST
SPDT
SWITCH		A0 TEST
	A0 TEST

GFK-2059 Chapter 4 Theory of Operation 4-5