Yamaha MDX-E100 Service Manual page 34

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