參數資料
型號: HD49235FS
廠商: Hitachi,Ltd.
元件分類: 數字信號處理
英文描述: Digital Signal Processor for CD
中文描述: 數字信號處理器的CD
文件頁數: 21/41頁
文件大?。?/td> 192K
代理商: HD49235FS
HD49235FS
Rev.2, Aug. 1995, page 21 of 41
SUBCK:
This pin inputs a subcode read clock.
Codes R to W are output together with codes P and Q. The codes are output in order, starting with the P
code, as serial data from the SUBOUT pin when read clock pulses are input at the SUBCK pin. Figure 9
shows the timing, which basically conforms to EIAJ CP-2401.
Signal Configuration:
Figure 9 shows the signals output for use in display of graphics. (SF: subcode
frame)
To read the subcode data, eight subcode clock pulses (SUBCK) should be input after the fall of the
subcode frame synchronization signal (CFCKP). The data for subcode channel P is output at the fall of
CFCKP. Data in channels Q to W is output at the rise of SUBCK. See figure 10.
SF0
CFCKP
SUBCK
SUB
OUT
*
*
*
P to W
P to W
*
*
*
Segments marked with X's are don't-care segments.
*
SUBCK input during SF0 and SF1 is permissible, but the resulting output from SUBOUT
will not necessarily be correct.
P to W
SF1
SF2
SF3
SF4
SF97
SF0
Notes:
S1
Figure 9 Output Timing for Graphics Display (1)
Subcode frame (SF)
CFCKP
SUBCK
SUB
OUT
P
Q
R
S
T
U
V
W
P
Figure 10 Output Timing for Graphics Display (2)
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