LC89057W-VF4A-E View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

LC89057W-VF4A-E

Digital Audio Interface Transceiver

ON Semiconductor 

LC89057W-VF4A-E

10.1.7 Output clocks (RMCK, RBCK, RLRCK, SBCK, SLRCK)

• The LC89057W-VF4A-E features two clock systems (R and S systems) in order to supply the various needed clocks

to peripheral devices such as A/D converter and DSP.

• The clock output settings for the R and S systems are done with PRSEL[1:0], XRSEL[1:0], XRBCK[1:0],

XRLRCK[1:0], PSBCK[1:0], PSLRCK[1:0], XSBCK[1:0], and XSLRCK[1:0].

• Setting range for each clock output pin when the PLL is used as source

(1) RMCK: Selection from 1/1, 1/2, and 1/4 of 512fs or 256fs

(2) RBCK: 64fs output

(3) RLRCK: fs output

(4) SBCK: Selection from 128fs, 64fs, and 32fs

(5)SLRCK: Selection from 2fs, fs, and fs/2

• Setting range for each clock output pins when the XIN is used as source

(1) RMCK: Selection from 1/1, 1/2, and 1/4 of 12.288MHz or 24.576MHz

(2) RBCK: Selection from 12.288MHz, 6.144MHz, and 3.072MHz

(3) SBCK: Selection from 12.288MHz, 6.144MHz, and 3.072MHz

(4) RLRCK: Selection from 192kHz, 96kHz, and 48kHz

(5) SLRCK: Selection from 192kHz, 96kHz, and 48kHz

• Setting range for each clock output pins when the TMCK is used as source

(1) RMCK: selection from 1/1, 1/2,1/4 of 512fs or 256fs.

(2) RBCK: 64fs output

(3) RLRCK: fs output

(4) SBCK: selection from 128fs, 64fs, 32fs

(5) SLRCK: selection from 2fs, fs, fs/2

• The polarity of RBCK, RLRCK, SBCK, and SLRCK can be reversed with RBCKP, RLRCKP, SBCKP, and SLRCKP.

• Clock switching is processed from the rising edge of RLRCK output after the falling edge of microcontroller interface

CE.

Output Pin Name

RMCK

RBCK

RLRCK

SBCK

SLRCK

Table 10.3 List of Output Clock Frequencies (Bold Items = Initial Settings)

PLL Source (Internal VCO CK)

TMCK Source (TMCK input CK)

XIN Source (XIN input CK)

512fs

256fs

512fs

256fs

12.288MHz

24.576MHz

512fs

256fs

128fs

256fs

128fs

64fs

512fs

256fs

128fs

256fs

128fs

64fs

12.288MHz

6.144MHz

3.072MHz

24.576MHz

12.288MHz

6.144MHz

64fs

12.288MHz

6.144MHz

3.072MHz

192kHz

fs

96kHz

48kHz

128fs

64fs

32fs

12.288MHz

6.144MHz

3.072MHz

2fs

192kHz

fs

96kHz

fs/2

48kHz

No.7202-17/59

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