Kenwood DP-1100 B Service Manual page 93

D P - 1 1 0 0 B II
2. IC OPERATION OF EACH CIRCUIT AND PIN DESCRIPTION
Pin No.
Symbol
60 DSLP
63 DAST
64 D I V -
65 DIV +
66 66 BUSE BUSE
96
I/O Waveform
/ 1 3 8 ^ S \
5 v
0
Data status signal output. (Error information signal output)
( 50 nS
—-y 0 V
0 Data status signal output. (Error information signal output)
V I i i 11 11/ o V
138 nS
Buffer memory status output.
Outputs an " H " signal when the jitter absorption buffer memory
0 enters range of + 2 or + 3 frames in its capacity of ± 4 frames.
This output is connected to pin DIV- of TC9178F (IC8) to lower the
138 disc motor revolution.
ixS
Buffer memory status output.
Outputs an " H " signal when the jitter absorption buffer memory
0
enters range of —2 or —3 frames in its capacity of ± 4 frames.
This output is connected to pin D I V + of TC9178F (IC8) to raise the
138 nS disc motor revolution.
Buffer selection input pin.
Selects the output condition of DIV —/DIV + .
At " H " , D i v ± output are made when the buffer memory enters
1 1
range of ± 2 frames. |At " L " , D i v ± output are made when it enters
range of ± 3 framesj
Description
T a b l e 2 - 3 - 4 A
Remarks
Connected to DIV —
(pin 5) of TC9178F
(IC8)
Connected to DIV +
(pin 4) of TC9178F
(IC8)