Marantz ST440 - Page 10

2. Function
If reception frequency is renewed by system controller LSI, timing signais indicated below and seriai data are transferred
by one cycle only.
CK- 1
CK-2
DATA
START SIGNAL
2.1 Data signal
FREQUENCY DATA SIGNAL
1 CYCLE= 1.8 ms
RECEPTION
BAND
SIGNALS
Data signal is composed of 17 bits, of which 12 bits are for frequency data and 5 bits are for reception bànd signais (LW/
FMJ/FM U/ AM9/ AM 1 0).
DO D 1 D2 . D4 D8 Dl6 D32 D64 Dl28 D2!16 DSI2 DI024 . LW FMJ FMU/E AM9 A MIO
DATA
FREQUENCY DATA 12a
2.2 Timing signais (CK-1, CK- 2)
Data signais are loaded with the timing shown below.
DATA
x
DO
x
CK- 1
_j
Lil
n
CK- 2
1~
5b
-1 blblblblbl-
7
Dl
5b
a = 100 )J sec
x
D2
n
RECEIVING BAND
DATA 5a
x
D4
n
-1
b = 20p sec