AK4543 Datasheet, PDF (31/31 Pages) Asahi Kasei Microsystems – AC’97 Rev 2.1 Multimedia Audio CODEC

[ASAHI KASEI]
[AK4543]
Appendix
1. Summary of the relationship of Slot 0 tag bit between SDATA_OUT and SDATA_IN
Whenever the AC ’97 Digital Controller addresses the Primary AK4543 or the AK4543 responds to a read
command, Slot 0 tag bits should always be set to indicate actual Slot 1 and Slot 2 data validity.
Function
AC ’97 Digital Controller Primary Read
Frame N, SDATA_OUT
AC ’97 Digital Controller Primary
Write
Frame N, SDATA_OUT
AK4543 Status
Frame N+1, SDATA_IN
Slot 0, bit 15
(Valid Frame)
1
1
Slot 0, bit 14
(Valid Slot 1 Address)
1
1
Slot 0, bit 13
(Valid Slot 2 Data)
0
1
1
1
1
Primary AK4543 Addressing: Slot 0 tag bits
Slot 0, Bits 1-0
(Codec ID)
00
00
00
When the AC ’97 Digital Controller addresses a Secondary AK4543, the Slot 0 Tag bits for Address and Data must
be “0”. A non-zero 2-bit Codec ID in the LSBs of Slot 0 indicates a valid Read or Write Address in Slot 1,
and the Slot 1 R/W bit indicates presence or absence of valid Data in Slot 2.
Function
AC ’97 Digital Controller Secondary
Read
Frame N, SDATA_OUT
AC ’97 Digital Controller Secondary
Write
Frame N, SDATA_OUT
AK4543 Status
Frame N+1, SDATA_IN
Slot 0, bit 15
(Valid Frame)
1
Slot 0, bit 14
(Valid Slot 1 Address)
0
Slot 0, bit 13
(Valid Slot 2 Data)
0
Slot 0, Bits 1-0
(Codec ID)
01, 10, or 11
1
0
0
01, 10, or 11
1
1
1
00
Secondary AK4543 Addressing: Slot 0 tag bits
IMPORTANT NOTICE
• These products and their specifications are subject to change without notice. Before considering any use
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concerning their current status.
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or other hazard related device or system, and AKM assumes no responsibility relating to any such use,
except with the express written consent of the Representative Director of AKM. As used here:
(a) A hazard related device or system is one designed or intended for life support or maintenance of safety
or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function
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1999/01