參數(shù)資料
型號: LC78631E
廠商: Sanyo Electric Co.,Ltd.
元件分類: 數(shù)字信號處理
英文描述: 16-bit fixed point DSP with Flash
中文描述: 具有閃存的 16 位定點 DSP
文件頁數(shù): 23/34頁
文件大?。?/td> 503K
代理商: LC78631E
No. 5342-23/34
LC78631E
PWM output format
PWM output example
19. CD-ROM outputs; Pin 42: LRSY, pin 43: CK2, pin 44: ROMXA, pin 45: C2F
Although the LC78631E is initially set up to output audio data MSB first from the ROMXA pin in synchronization
with CK2, it can be switched to output CD-ROM data by issuing a CD-ROM XA command. Since this data has not
been processed by the interpolation, previous value hold, muting, and other digital circuits, it is appropriate for input
to a CD-ROM decoder LSI. CK2 is a 2.1168 MHz clock, and data is output on the CK2 falling edge. However, this
clock polarity can be inverted by issuing a CK2 polarity inversion command. C2F is the flag information for the data
in 8-bit units. Note that the CD-ROM XA reset command has the same function as the CONT1 pin (pin 37).
Code
Command
RES = low
$88
CD ROM XA
$8B
CONT AND CD-ROM XA RESET
G
G
$C9
CK2 POLARITY INVERSION
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