Sony BVW-55 Maintenance Manual page 623

MSM6524GS-KR1 (OKI)
C-MOS 12 CHANNELS 8-BITS D-A CONVERTER WITH 96-BIT EEPROM
—TOP VIEW—
1 GND
2
AGND
3
4 NC NC
5
6
7
8
9
10
11 NC NC
12
13
14 AV V
DD DD
PIN PIN
I/O SIGNAL I/O SIGNAL
NO. NO.
1 — A GND 15 — V
DD
2 O AO2 16 O AO12
3 O AO3 17 I TST2
4 — NC 18 — NC
5 O AO4 19 I TST1
6 O AO5 20 O OUT
7 O AO6 21 O DO
8 O AO7 22 I LOAD
9 O AO8 23 I DA
10 O AO9 24 I CLK
11 — NC 25 — NC
12 O AO10 26 I CS
13 O AO11 27 O AO1
14 — AV 28 — GND
DD
INPUT
CLK ; SHIFT CLOCK
CS ; WRITE MODE PROTECT
DA ; SERIAL DATA
LOAD ; LOAD INPUT OF 8-BIT SHIFT REGISTER
TST1, TST2 ; TEST PINS
OUTPUT
AO0 - AO12 ; 8-BIT D/A OUTPUTS
DO ; LSB BIT DATA OF 8-BIT SHIFT REGISTER
OUT ; MONITOR PIN
MODE ( 1 ) WRITE
1st BYTE
D0 D1 D2 D3 D4 D5 D6 D7 D0
1 0 0 1 A0 A1 A2 A3 10
MODE SELECT ADDRESS SELECT
MODE ( 2 ) LOAD
1st BYTE
D0 D1 D2 D3 D4 D5 D6 D7 D0
1 1 1 1 A0 A1 A2 A3 10
MODE SELECT ADDRESS SELECT
MODE ( 3 ) MEMORY TEST
1st BYTE
D0 D1 D2 D3 D4 D5 D6 D7 D0
0 0 1 1 A0 A1 A2 A3 O0
MODE SELECT ADDRESS SELECT
BVW-55
23 21
DA DO
28
27
24
26
25
20
OUT
24
23
26 27
CS AO1
22
2
AO2
21
22 3
LOAD AO3
20
5
AO4
19
6
AO5
18
7
AO6
17
19 8
TST1 AO7
16
9
AO8
15
17 10
TST2 AO9
12
AO10
13
AO11
16
AO12
2nd BYTE
D1 D2 D3 D4 D5 D6 D7
11 12 13 14 15 16 17
DA DATA SET
2nd BYTE
D1 D2 D3 D4 D5 D6 D7
11 12 13 14 15 16 17
DA DATA SET
2nd BYTE
D1 D2 D3 D4 D5 D6 D7
O1 O2 O3 O4 O5 O6 O7
MEMORY DATA OUTPUT
0 ; LOW LEVEL
1 ; HIGH LEVEL
MODE SELECT
D0 D1 D2 D3 MODE SELECT
1 0 0 1 MODE1
1 1 1 1 MODE2
0 0 1 1 MODE3
OTHERS DON'T CARE
ADDRESS SELECT
D4 D5 D6 D7
ADDRESS SELECT
A0 A1 A2 A3
0 0 0 0 DON'T CARE
1 0 0 0 AO1
0 1 0 0 AO2
1 1 0 0 AO3
0 0 1 0 AO4
1 0 1 0 AO5
0 1 1 0 AO6
1 1 1 0 AO7
0 0 0 1 AO8
1 0 0 1 AO9
0 1 0 1 AO10
1 1 0 1 AO11
0 0 1 1 AO12
1 0 1 1 DON'T CARE
0 1 1 1 DON'T CARE
1 1 1 1 DON'T CARE
D/A OUTPUT
D0 D1 D2 D3 D4 D5 D6 D7
10 11 12 13 14 15 16 17
= VOLA + ( VOHA_VOLA ) /256 x 1
0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 = VOLA + ( VOHA_VOLA ) /256 x 2
= VOLA + ( VOHA_VOLA ) /256 x 3
0 1 0 0 0 0 0 0
= VOLA + ( VOHA_VOLA ) /256 x 4
1 1 0 0 0 0 0 0
= VOLA + ( VOHA_VOLA ) /256 x 5
0 0 1 0 0 0 0 0
= VOLA + ( VOHA_VOLA ) /256 x 256
1 0 1 1 1 1 1 1
0 0 1 1 1 1 1 1 = VOLA + ( VOHA_VOLA ) /256 x 254
= VOLA + ( VOHA_VOLA ) /256 x 255
1 1 1 1 1 1 1 1
= VOLH
0 1 1 1 1 1 1 1
CLOCK
24
CLK
CONTROL
8-BIT DATA
23
DA SHIFT OUTPUT
REGISTER CONTROL
8
8 8
8
SENSE
DA DATA SET
AMP.
8
LATCHS
(8-BIT x 12)
96
D/A CONVERTERS
12
BUFFERS
12
D/A OUTPUT
0 ; LOW LEVEL
1 ; HIGH LEVEL
21
D0
DATA CMD
SET DECODER
ADDRESS CMD
GEN. CONTROL
EEPROM
(8 x 12 BITS)
26
CS
22
LOAD
17
TST2
19
TST1
20
OUT
AUTO POWER
READ TIMER ON
CONTROL RESET
2, 3, 5 - 10
12, 13, 16, 27
AO1 - AO12
2-73
IC