Kenwood DP-1100 B Service Manual page 92

2. IC OPERATION OF EACH CIRCUIT AND PIN DESCRIPTION
Pin No.
Symbol I/O
49 MLCK 0
c
50 WDCK 0
51
L/RG 0
^ — ~ \
52 0
X-0
/
(f \ l\ A I
\ALALy o v
53 X-1 I
54 CKSE I
55 CK4M 0
56 0
CK2M
57 TES1
I I
58
TES2
c
59 COFS 0
44 /tS
Waveform
MSB/LSB clock pulse output. Outputs the clock signal (176.4 kHz)
obtained from 8-division of signal BCK, which is used as a set clock
pulse when 8-bit parallel data is output.
Word clock pulse output. Outputs the clock signal (88.2 kHz) obtain­
r r n N 5 v
ed from 16-division of signal BCK, which indicates the output period
5/tS
i - L L J / O V
of one word.
Sampling frequency output. Outputs the clock signal (44.1 kHz) ob­
tained from 2-division of signal WDCK, which indicates the data out­
put channel.
" L " = L channel, " H " = R channel.
4.26
V
( X _ 1 ) X'tal OSC connection pins. X'tal OSC is connected to generate the X'tal OSC connection pins. X'tal OSC is connected to generate the
\ 5 V
clock signal required in the system. clock signal required in the system.
( X _ f > ) (Feedback resistance and amp incorporated) (Feedback resistance and amp incorporated)
X'tal OSC frequency = 8.4672 MHz X'tal OSC frequency = 8.4672 MHz
0.05 tiS
Selection pin which informs X'tal OSC frequency.
(Pullup resistance incorporated)
-
| " H " or open = 8.4672 MHz,|
" L " = 4.2336 MHz
TTT\ 5 V
4 MHz clock pulse output. Outputs 4.2336 MHz, which is also used
10.2 pS
as the clock signal for microprocessor.
0
- L ^ / V
•A
5 V
2 MHz clock pulse output. Outputs 2.1162 MHz, which is used as
I0.2 pS
the clock signal for TC9178F (IC8).
o
- L - y v
Test pins (pullup resistance incorporated) Test pins (pullup resistance incorporated)
In normal operation, it is " H " or open. In normal operation, it is " H " or open.
5 v
rrK
)5o ns
Frame period signal output. Outputs corrected frame period signal.
- W o
v
90 nS
T a b l e 2 - 3 - 4 A
Description
D P - 1 1 0 0 B II
Remarks
Not connected
Connected to C21K
(pin 7) of TC9178F
(IC8)
9 5