4-12
BKP-7934 IMM
IC
UPD4991AGS (NEC)
UPD4991AGS-E2
INPUTS
A0 - A3
CS1
, CS2
OE
WE
X
IN
OUTPUTS
TP1, TP2
INPUTS/OUTPUTS
D0 - D3
X
OUT
OTHER
NC
: ADDRESS
: CHIP SELECT
: READ ENABLE
: WRITE ENABLE
: CRYSTAL SIGNAL
: TIMING PULSE
: DATA
: CRYSTAL SIGNAL
: NO CONNECTION
4-BIT PARALLEL I/O FOR CALENDAR/CLOCK
—TOP VIEW—
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CS1
IN
TP1
OUT
TP2
OUT
A0
IN
NC
A1
IN
A2
IN
A3
IN
OE
IN
GND
V
CC
X
IN
X
OUT
CS2
IN
D3
I/O
NC
D2
I/O
D1
I/O
D0
I/O
WE
IN
COMPARATOR
MPX
1/2
15
OSC
15 STAGE
BINARY DIVIDER
TIME COUNTER
DATA BUS
N CH
OPEN DRAIN
CLOCK STOP
CLOCK WAIT
X
IN
X
OUT
OE
WE
D3
D2
D1
D0
19
18
19
11
16
14
13
12
A3
A2
A1
A0
8
7
6
4
CS1
CS2
1
17
TP
1
TP2
2
3
SEC.
MIN.
HOUR WEEK
DAY MONTH YEAR
TIMING PULSE GENERATOR
DATA BUS
CONTROLLER
ADDRESS
BUS
CONTROLLER
ADDRESS
DECODER
ALARM
MODE REGISTER
CONTROL REGISTER 1
CONTROL REGISTER 2
UPD4701AGT (NEC)
COUNT
FLAG
CIRCUIT
DATA MULTIPLEXER
AND
LATCH
SWITCH
FLAG
CIRCUIT
16 - 23
10
D0 - 7
SF
11
CF
7
8
9
RIGHT
LEFT
MIDDLE
X
/L
U/
L
CS
14
13
15
4
5
6
YB
YA
RESET Y
YB
YA
3
1
2
RESET X
PHASE DISC-
RIMINATION
AND
EDGE DETECT
PHASE DISC-
RIMINATION
AND
EDGE DETECT
KEY
INPUTS
CIRCUIT
Y AXIS UP/DOWN
COUNTER
X AXIS UP/DOWN
COUNTER
8
9
7
11
10
4
23
22
21
20
19
18
17
XA
IN
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
1
17
9
16
10
15
11
14
12
13
XB
IN
RESET X
IN
YA
IN
YB
IN
RESET Y
IN
RIGHT
IN
LEFT
IN
MIDDLE
IN
SF
OUT
CF
OUT
GND
U / L
IN
X / Y
IN
CS
IN
D0
OUT
D1
OUT
D2
OUT
D3
OUT
D4
OUT
D5
OUT
D6
OUT
D7
OUT
V
DD
MIDDLE
U/
L
14 13
15
D2
D1
D0
D3
D4
D5
D6
D7
SF
CF
X
/Y
CS
RESET X
XB
XA
YB
YA
RESET Y
RIGHT
LEFT
6
5
16
1
2
3
CS
X
/ Y
XA, YA
XB, YB
RIGHT
,
LEFT
,
MIDDLE
U /
L
D0 - D7
CF
SF
RESET X
RESET Y
; CHIP SELECT
; X/Y COUNTER SELECT
; INPUT A PHASE
; INPUT B PHASE
; SWITCH INPUT
FOR INTERNAL STATUS
; UPPER/LOWER BYTE SELECT
; DATA
; COUNT FLAG
; SWITCH FLAG
; X COUNTER RESET
; Y COUNTER RESET
C-MOS INCREMENTAL ROTARY ENCODER
—TOP VIEW—
Summary of Contents for BKP-7934
Page 1: ...MSU UPGRADE UNIT BKP 7934 INSTALLATION AND MAINTENANCE MANUAL 1st Edition Revised 1 ...
Page 4: ......
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Page 35: ...5 1 BKP 7934 IMM 5 1 Section 5 Block Diagrams ...
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Page 41: ...6 1 BKP 7934 IMM 6 1 2 3 4 5 1 I J K L M N O P Section 6 Schematic Diagrams ...
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Page 57: ...7 1 BKP 7934 IMM 7 1 Section 7 Board Layout ...
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