Yamaha MDX-E100 Service Manual page 34

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MDX-E100
IC704 : YM6104
DEQ (Digital Equalizer)
Pin No.
Pin Name
1
V
DD
2
XMD
3
CRS
4
CDI
5
CDO
6
XCLK
7
TRG
8
ESL
9
ELD
10
ECLK
11
CLK
12
V
SS
13, 14
SI0, SI1
15, 16
SO0, SO1
17
OVF
18
TEST
19
C2/Sign
20
C1/TESTM
21
CO
22
CEMD
23
IC
24
Sync
33
9
10
SERIAL
SI0
13
DATA
SI1
14
INPUT
C0
21
COEFFICIENT
C1
20
RAM
C2
19
TRANSFER
TRG
7
BUFFER
OVF
17
SERIAL
SO0
15
DATA
SO1
16
OUTPUT
ESL
8
1
12
18
11
I/O
I
+5V power supply
Switches CDI input to either synchronous mode (1 : 1) "L" or asynchronous mode
I
(Start-stop synchronous system 16 : 1) "H"
I
Initializes SCI interface
I
SCI input for setting micro program, factor and control register
O
SCI output for setting micro program, factor and control register
I
Input-output clock for CDI and CDO
Determines parameter transfer timing from transfer buffer to factor RAM when external trigger
I
is selected
I
Enters output timing into SO0 and SO1 when EXT clock is selected
I
Enters input timing into SI0 and SI1 when EXT clock is selected
I
Enters input-output clock for SI0, SO0 and SO1 when EXT clock is selected
I
Master clock input
I
Ground
I
16 bits serial input
O
16 bits serial output
O
Over flow detect
I
Used for testing
Usually connected to +5V
Outputs bit 2 of factor RAM while delaying it by 1 bit. Used as a timing signal
O
Monitors sign bit of accumulator by setting test Reg
(When factor RAM is used as a timing signal, effective bit number of factor decreases)
Outputs bit 1 of factor RAM while delaying it by 1 bit. Used as a timing signal
O
Switches to test output of multiplier by setting test Reg
O
Outputs bit 2 of factor RAM while delaying it by 1 bit. Can be used as a timing signal
Turns OFF CE of SCI input
I
CE ON
: "H"
CE OFF : "L"
I
Initializes DEQ operation
I
Synchronous signal of system
22
2
6
3
INPUT
BUFFER
SCI
8 WORDS
PARAMETER
CONTROL
MULTIPLIER
MICRO
PROGRAM
ACCUMULATOR
RAM
RANDOM
Q SHIFTER
NUMBER
Q REGISTER
GENERATOR
ROM
OUTPUT
7 WORDS
BUFFER
8 WORDS
DATA RAM
128 WORDS
TIMING
ADDRESS
CONTROL
COUNTER
24
23
Function
CDI
4
CDO
5

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