Sony BVP-550 Maintenance Manual page 392

IC
UPD71055GB-10-3B4(NEC)FLAT PACKAGE
C-MOS PARALLEL INTERFACE UNIT
—TOP VIEW—
44 43 42 41 40 39 38 37 36 35 34
INDEX
NC
1
2
CS
3
4
A1 GND
5
A0
6
P27
7
P26
8
P25
9
P24
10
P20
11
P21
12 13 14 15 16 17 18 19 20 21 22
A1, A0 ; ADDRESS
CS ; CHIP SELECT
D7-D0 ; DATA BUS
P07-P00 ; PORT 0
IC ; INTERNALLY CONNECTED
CS RD WR A1 A0
0 0 1 0 0 PORT0
0 0 1 0 1 PORT1
0 0 1 1 0 PORT2
0 0 1 1 1
0 0 0 X X
0 1 0 0 0 DATA • BUS
0 1 0 0 1 DATA • BUS
0 1 0 1 0 DATA • BUS
0 1 0 1 1 DATA • BUS
0 1 1 X X
1 X X X X
24-31
DATA BUS
D7-D0
BUFF
GROUP
CONTROL
44
RD
35
WR
READ/
4
COMMAND
A1 WRITE
5
REGISTER
CONTROL
A0
32
RESET
2
CS
GROUP
CONTROL
6-28
NC
NC
33 2
CS
RESET
32
5
31 A0
D0
4
A1
30 D1
29 D2
35
WR
28 D3 44
RD
27 D4
24
26 D5 D7
25
D6
25 D6
26
D5
D7
24
27
D4
V (+5V) 23 28
DD
D3
29
D2
30
D1
31
D0
32
RESET
P17-P10 ; PORT 1
P27-P20 ; PORT 2
RD ; READ STROBE
WR ; WRITE STROBE
OPERATION CPU ACTION
DATA • BUS INPUT
DATA • BUS INPUT
DATA • BUS INPUT
DISABLE
PORT0 OUTPUT
PORT1 OUTPUT
PORT2 OUTPUT
COMMAND REGISTER OUTPUT 0 ; LOW LEVEL
1 ; HIGH LEVEL
HIGH IMPEDANCE
X ; DON'T CARE
8
8
36-43
P07-P00
PORT 0
6-9
P27-P24
8
PORT 2
13-10
P23-P20
22-18,
16-14
8
P17-P10
PORT 1
X24164SI(XICOR)(16K BIT)FLAT PACKAGE
X24C02S-3.0(XICOR)(2K BIT)FLAT PACKAGE
C-MOS SERIAL EEPROM
- TOP VIEW -
43
P00
42
P01
41
P02 A0 1 Vcc (+5V) 8
IN
40
P03
39
P04 A1 2 7 WC*
IN
38
P05
37
P06 A2 3 6 SCL
IN
36
P07
14
P10 4 GND 5 SDA
15
P11
16
P12
18
P13
19
P14 7
WC *
20
P15
21
P16
22
P17
5
START
SDA
10
P20 STOP
11
LOGIC
P21
12
P22
13
P23
9
P24
SLAVE ADDRESS
8
P25
6 REGISTER
SCL
7
COMPARATOR
P26
6
P27 3
A2
2
A1
1
A0
D OUT
ACK
NOTE : * TEST (at X24164SIC7000)
6 5
SCL SDA
3
A2
2
A1
1
IN
A0
7
IN
WC*
OUT
START
H. V. GENERATION
CYCLE
TIMING &
CONTROL
CONTROL
LOGIC
2
E PROM
2K ; 64x32
X DEC
4K ; 64x64
16K ; 64x256
WORD
ADDRESS
COUNTER
R/W Y DEC
8
CK
DATA
PIN
ERGISTER
D OUT
BVP-550