YMF753 데이터 시트보기 (PDF) - Yamaha Corporation

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YMF753

Audio CODEC with Digital Audio I/F

Yamaha Corporation 

YMF753

3Ah : DIT Control 1 (Read/Write, Default: 2000h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

V

-

SPSR1-0 GL CC6 CC5 CC4 CC3 CC2 CC1 CC0 PRE COPY AUD# PRO

V ...................This bit determines V-bit (Validity flag) output from DIT.

“0” : The Validity flag is “0” (Valid).

“1” : The Validity flag is “1” (Invalid).

SPSR1-0 .......These bits determine sampling frequency of channel status output from DIT. These bits are

hardwired to “10b”, because SPDIF output of YMF753 is fixed to 48kHz.

GL.................This bit determines bit15: L-bit (Generation status) of channel status output from DIT. The

sense of Generation status is different by Category Code.

CC6-0 ...........These bits determine bit14-8: Category Code of channel status output from DIT.

PRE...............This bit determines bit3: Pre-emphasis of channel status output from DIT.

“0” : without Pre-emphasis

“1” : with Pre-emphasis of 50/15µs

COPY ...........This bit determines bit2: Copy protection of channel status output from DIT.

“0” : Copyright

“1” : No Copyright

AUD# ...........This bit determines bit1 of channel status output from DIT. If AC-3 or DTS is output, set to “1”.

“0” : PCM format

“1” : Non-PCM format

PRO ..............This bit determines bit0 of channel status output from DIT. It should be set to “0” as Consumer

use.

62h : Vendor Function (Read/Write, Default: 0224h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

*

*

*

*

*

*

*

*

*

*

*

* TX-7 EXEN *

*

TX-7 .............This bit selects the pin function of No.47.

“0” : EAPD

“1” : DIT

EXEN ...........This bit selects whether EXT24M pin outputs clock or not.

“0” : EXT24M is power down state, and outputs low level.

“1” : EXT24M outputs the clock.

The bits except TX-7 and EXEN should not be changed from the default value.

13

March 6, 2001

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