CS5535-UDC datasheet(83/555 Pages) NSC

Part #	CS5535-UDC

Description	Geode??CS5535 I/O Companion Multi-Function South Bridge

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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83 / 555 page

ACC Functional Description (Continued)

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83

Revision 0.8

4.3.4

Codec Interface

4.3.4.1

AC Link Serial Interface Protocol

The following figures outline the slot definitions and timing scheme of the AC Link serial protocol.

Figure 4-4. AC Link Slot Scheme

Figure 4-5. AC Link Output Frame

Figure 4-6. AC Link Input Frame

TAG

CMD

PCM

LINE1

PCM

RSVD

HSET

GPIO

AC_S_SYNC

AC_S_OUT

(Outgoing Stream)

AC_S_IN

Data Phase

TAG

ADDR

CMD

DATA

LEFT RIGHT

DAC

CEN

L SUR R SUR

LFE

DAC

CNTL

TAG

STATUS

PCM

LINE1

MIC

RSVD

HSET

GPIO

ADDR

STATUS

DATA

LEFT RIGHT

ADC

ACD STATUS

or AC_S_IN2

(Incoming Stream)

RSVD RSVD RSVD

01234

5

6789

10

11

12

Slot #

Phase

Valid

Frame

Slot 1 Slot 2

Slot 12

End of

AC_CLK

AC_S_SYNC

Time slot “valid” bits

(“1” = Time slot contains valid PCM data)

Slot 1

Slot 2

Slot 3

Slot 12

Tag Phase

Data Phase

48 kHz (20.8 µs)

12.288 MHz (81.4 ns)

AC_S_OUT

“0”

19

0

19

019

00

Slot 3

Previous Frame

Codec

Ready

Slot 1 Slot 2

Slot 12

End of

Time slot “valid” bits

(“1” = Time slot contains valid PCM data)

Slot 1

Slot 2

Slot 3

Slot 12

AC_S_IN or AC_S_IN2

“0”

“19”

0

19

0

19

0

19

0

AC_CLK

AC_S_SYNC

Tag Phase

Data Phase

48 kHz (20.8 µs)

12.288 MHz (81.4 ns)

Previous Frame

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CS5535-UDC Datasheet(PDF) 83 Page - National Semiconductor (TI)

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