Kenwood DP-1100 B Service Manual page 116

DP- 1 100B II
3-1-5 A d d r e s s d a t a (data Q , time data) reading
In c o n f o r m i t y w i t h t h e s t a n d a r d f o r CD s y s t e m , t i m e data is
r e c o r d e d as c h a n n e l Q data by use of 1 bit o u t of t h e 8 bits
w h i c h c o m e after t h e sync signal of f r a m e data. 9 8 of these
c h a n n e l Q signal in 7 3 5 0 Hz f r a m e signal c a n be used as
m e a n i n g f u l t i m e d a t a . T h u s , this data a p p e a r s repeatedly at
7 3 5 0 H z / 9 8 = 7 5 Hz.
For t h e a d d r e s s data f o r m a t , refer t o t h e address data c o n ­
f i g u r a t i o n s h o w n b e l o w .
In D P - 1 1 0 0 B / I I , t h e t i m e data read o u t is r e c o r d e d a n d held
by 2 0 w o r d s (1 b l o c k ) in units of 4 bits in EFM
d e c o d e r ( I C 8 ) T C 9 1 7 8 F . T h e data in a b l o c k is read by 2 0
r e a d i n g o p e r a t i o n s in units of 4 bits o n t h e p r o g r a m .
Fig. 3 - 1 D s h o w s t h e o p e r a t i o n f l o w c h a r t .
T h e a d d r e s s data f o r m a t (in t h e p r o g r a m area) is as s h o w n
b e l o w .
SO,
S1
C O N T R O L
A D R
M N R
X
M I N
SEC
F R A M E
ZERO
A M I N
ASEC
F R A M E
CRC
CONTROL A D R
So,Si
2 4 4
2 0
3. OPERATION OF MAIN MICROPROCESSOR
2-bit address signal s y n c h r o n i z i n g pattern
4 - b i t c o n t r o l d a t a . Selection of 2 C H / 4 C H
play signals.
Designates p r e - e m p h a s i s O N / O F F a n d digital c o p y e n a b l e / d i s a b l e .
: 4 - b i t m o d e data
M O D E 1 (BCD 1) : A d d r e s s m o d e
M O D E 2 (BCD 2) : Disc c a t a l o g n u m b e r m o d e
M O D E 3 (BCD 3) : Special
c h a r a c t e r s )
: M u s i c n u m b e r expressed by 2 - d i g i t BCD (8 bits)
: Index in e a c h m u s i c expressed by 2 - d i g i t BCD (8 bits)
: Elapsed t i m e ( m i n u t e ) in e a c h m u s i c expressed by 2 - d i g i t BCD (8 bits)
: Elapsed t i m e ( s e c o n d ) in e a c h m u s i c expressed by 2 - d i g i t BCD (8 bits)
: Elapsed t i m e (frame) in e a c h m u s i c expressed by 2 - d i g i t BCD (8 bits) (1 f r a m e =
: U n u s e d (8-bit 0 data)
: Elapsed t i m e ( m i n u t e ) in disc expressed by 2 - d i g i t BCD (8 bits)
: Elapsed t i m e ( s e c o n d ) in disc expressed by 2 - d i g i t BCD (8 bits)
: Elapsed t i m e (frame) in disc expressed by 2 - d i g i t BCD (8 bits)
: 1 6 - b i t CRC (Cyclic R e d u n d a n c y Check) c o d e data c a l c u l a t e d f o r C O N T R O L - A F R A M E data
M N R X M I N
8 8 8
A d d r e s s data configuration
signal
i n f o r m a t i o n m o d e ( W r i t t e n
SEC FRAME ZERO A M I N
8 8 8
by 0 t o 9 a n d A to Z
1/75 s e c o n d s )
ASEC AFRAME CRC
8 8 8 1 6
a l p h a n u m e r i c
So.Si •
bits