Yamaha SPX990 Service Manual page 14

SPX990
®
DF1760P (XM414A00)
Digital Filter
PIN
NO.
NAME
I/O
FUNCTION
PIN
NO.
NAME
I/O
FUNCTION
1
OVL
0
Detects Lch overflow |H
indicates on)
15
SYSCLK
System
clock input (256fs/384fs)
2
OVR
0
Detects
Rch
overflow (H
indicates
c»i)
16 SCLK
It/O
Data
clock (32fs to 64fs]
3
D3
I
Data input
(MSB) 17
UR
IT/O L/R
channel
distinguishing clock
4
D2
I
Data input
18
SOATA
0
Serial
data output
5
D1
I
Data
input
19
FSYNC
IT/O
Frame
cycle clock
(2fs)
6
DO
I
Data
input (LSB)
20 LRSC
IT
L/R
logic
switch (H indicates Lch/H)
7 TP1 Test
terminal (used
on NC) 21
PD
IT
Power down mode
8
VSS1
Ground
for modulator
(L
indicates
power down)
9
VDDl
Power
source
for
modulator
I
+
5V)
22
MODE
2
IT
Selects
form
of
output data
10
256fs
0
System
clock output (256fs)
23
MODE
1 IT
Selects
form
of output data
11
STROBE
i
Data strobe input (128fs)
24 S/M
IT
Slave/master
mode
selector
12
LRCK
i
L/R
dock
input (64fs) (H indicates
slave)
13
CALD
IT
Calibration
(L
indicates on/validity)
25 CLKSEL
It
System
clock selector
14
CAL
0
Calibration
output (H
indicates on) (H
indicates 256fs)
26 TP2
Test terminal (used
on NC)
27
VDD2
•+•
5V
digital
28
VSS2
Digital
ground
•IT
Input with
internal pull-up
•
YSF210
(XK280A00}
8 time Over Sampling
Digital
Filter
9
10
11
12
NAME
xo
XI
Vss2
BCI
SDSY
IBIT1
IBIT2
I8IT3
MUTE
NC
SDI
Voo2
I/O
FUNCTION
System
clock
Ground
Bit
clock
L/R select and
input timing
Input
bit
selection
—
.....
22
bit 20
bit
ta
bit
16
bit
AVOSP
MEl
1BIT1
H
L
H
L
H
L
IBIT2
H H
L L
H H
IBIT3
H
H H H
L L
Mute
No
connection
Input data
Power
supply
PIN
NO.
13
14
15
16
17
18
19
20
21
22
23
24
NAME
0BIT1
0BIT2
NC
ASY
Vssi
BCO
WCO
SHL
DRO
NC
DLO
Vool
I/O
FUNCTION
Output
bit
selection
22
bit
20
bit
18
bit
no
ouiDul
OBIT1 H
L
H
L
08IT2 H
H
L L
No
connection
Synchronous/Asynchronous system
clock selection
Ground
Bit
clock
of
DLO,
DRO
Word
clock
of
DLO,
DRO
Deglich
signal of L/R channel
Output
data
of
R
channel
No
connection
Output data
of L channel
Power
supply
®
YPIWM LZ95D62 (XM048A00)
Peak Meter
Driver
PIN
NO.
NAME
I/O
FUNCTION
PIN
NO.
NAME
I/O
FUNCTION
1
GND
10
LEVS
0
2
SCLK
Clock
11
LODO
0
3
SYWN
SYNC
12
FTO
1
Fall
time
4 DIN
I
Signal input
13
DBO
0
-36/-
42
5
RSTN
I
Reset
14 OBI
0
-24/-
30
6
MODE
I
Mode
select
15
DB2 0 -12/-
18
7
REVE
0 16
DB3 0
Clip/-
6
8
ROOD
0 17
VDR
9
GND
10
VDD
17