YSS944 Datasheet, PDF (29/34 Pages) YAMAHA CORPORATION – ADAMB Advanced Digital Audio Multi channel decode processor

YSS944/943/940
5) SDOBCK, SDOWCK, SDO3 to SDO0 (master operation)
No.
Parameter
Symbol Condition
Min. Typ. Max. Unit
1 SDOBCK output frequency
f_OBCK
Note 2)
2 SDOBCK output duty factor d_OBCK Notes 1 and 3)
3 SDOBCK rise time
t_OBR
CL = 50 pF
4 SDOBCK fall time
t_OBF
CL = 50 pF
5
SDOWCK, SDO3 to SDO0
Output delay time
t_ODLY
CL = 50 pF
-15
6
SDIBCK → SDOBCK
Output delay time
t_OBDLY
CL = 50 pF
Note 4)
0
12.5 MHz
50
%
10
ns
10
ns
15
ns
25
ns
Note 1)
Note 2)
Note 3)
Note 4)
The output polarity of SDIBCK and SDOBCK can be changed by DSIBP and DSOBP. In the
figure below, SDOBP = SDOBP = 0.
Although output divided from SDIMCK can be selected for SDOBCK via WBSEL[2:0], operation
is not guaranteed if SDIMCK’s frequency exceeds the range noted above.
When “SDIBCK through” has been selected (WBSEL[2:0] = 00), the SDDBCK output duty factor
is affected by the SDIBCK duty factor.
When “SDIBCK through” has been selected (WBSEL[2:0] = 00).
6
SDIBCK
3
4
SDOBCK
5
SDOWCK
5
SDO3-0
1
2
2
29