Marantz SA1/F1N Service Manual page 43

IC802 RH-iX1535GEZZ: Input/Output Expander (IX1535GE) (2/2)
Pin No. Terminal Name Input/Output
60 MODE Input Mode switching terminal. Fix at "L".
61 BUFCO Input/Output Buffer output C
62 TEST Input Test terminal. Fixed at "L".
63 BUFCI Input Buffer input C. Not used.
64 VSS - Digital GND
Pins 1 to 15: Simultaneous changes possible. Operating frequency: approx. 10MHz
Pins 18 to 47: Simultaneous changes possible. (Static signal) Operating frequency: approx. 1kHz
Pins 50 to 57: Simultaneous changes almost impossible. Operating frequency: approx. 1kHz
INPUT/
OUTPUT
PINS
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
VDD 49
VDD
EXPD(3) 50
SOUT(3)
Data Buffer
SOUT(4) EXPD(4) 51
Latch D
SOUT(5) EXPD(5) 52
BUFDO
53
BUFDI 54
SBUFBO 55
SBUFBI
56
SBUFAO 57
SBUFAI 58
MRST MRST 59
MODE
MODE 60
SEL BUFCO 61
TEST TEST 62
63
CK BUFCI
R/W CTL
VSS 64
VSS
1 2 3 4 5
INPUT/OUTPUT
PINS
Function
INPUT/
OUTPUT
PINS
32 VSS
EXPBL(3)
31
Data Buffer
EXPBL(2)
30
Latch C
EXPBL(1)
29
EXPBL(0)
28
EXPAU(3)
27
EAPAU(2)
26
VDD
25
VSS
24
EXPAU(1)
23
EXPAU(0)
22
EXPAL(3)
21
EAPAL(2)
20
Data Buffer EXPAL(1)
19
18 EAPAL(0)
17 VDD
6 7 8 9 10 11 12 13 14 15 16
INPUT/OUTPUT PINS
OPEN DRAIN WHEN
OUTPUTTING
2-29
IC804 RH-iX2839AFZZ: 1Mbit SRAM (IX2839AF)
Pin No. Terminal Name
1* NC Not used
2 A16 Address input
3 A14 Address input
4 A12 Address input
5-12 A7-A0 Address input
13-15 I/O1-I/O3 Data input/output
16 GND Ground
17-21 I/O4-I/O8 Data input/output
22 CE1 Chip enable input
23 A10 Address input
24 OE Output enable input
25 A11 Address input
26, 27 A9, A8 Address input
28 A13 Address input
29 R/W Read/Write input
30 CE2 Chip enable input
31 A15 Address input
32 VDD Power terminal (+5V)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
VSS
Q2(3)
A4
A5
Q2(2)
A6
Q2(1) A7
A8
Q2(0)
A12
A13
Q1(7)
A14
Q1(6)
A15
A16
VDD
VSS
I/O1
Q1(5)
A1(4)
Q1(3)
Q1(2)
Q1(1)
I/O8
Q1(0)
VDD
OE
R/W
CE1
CE2
Function
CE
VDD
GND
MEMORY CELL
ARRAY
1024 x 28 x 8
(1048576)
SENSE AMPLIFIER
COLUMN ADDRESS
DECODER
COLUMN ADDRESS
REGISTER
COLUMN ADDRESS
BUFFER
CE
A2
A0 A9 A11
A1 A3
A10
CE
2-30
(TOP VIEW)
N.C. 1 32 VDD
2 31
A16 A15
A14 3 30 CE2
A12 4 29 R/W
5 28
A7 A13
A6 6 27 A8
7 26
A5 A9
A4 8 25 A11
A3 9 24 OE
10 23
A2 A10
A1 11 22 CE1
A0 12 21 I/O8
13 20
I/O1 I/O7
I/O2 14 19 I/O6
I/O3 15 18 I/O5
16 17
GND I/O4