參數(shù)資料
型號(hào): WM8756
廠商: Wolfson Microelectronics
英文描述: 192KHZ SIX CHANNEL SACD COMPATIBLE AUDIO DAC
中文描述: 192kHz的六聲道SACD的兼容的音頻數(shù)模轉(zhuǎn)換器
文件頁數(shù): 15/39頁
文件大?。?/td> 330K
代理商: WM8756
WM8756
Advance Information
AI Rev 1.3 October 2001
15
I
2
S MODE
In I
2
S mode, the MSB is sampled on the second rising edge of BCKIN following a LRCIN transition.
LRCIN is low during the left samples and high during the right samples.
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN0/1/2
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
1 BCKIN
1 BCKIN
Figure 8 I
2
S Mode Timing Diagram
DSP EARLY MODE
In DSP early mode, the first bit is sampled on the BCKIN edge following the one which detects a low to
high transition on LRCIN.
1 BCKIN
LRCIN
BCKIN
DIN0
Input Word Length (IWL)
1/fs
CHANNEL 0
LEFT
n
2
1
n-1
LSB
MSB
n
2
1
n-1
CHANNEL 0
RIGHT
2
1
CHANNEL 1
LEFT
n
n-1
CHANNEL 2
RIGHT
NO VALID DATA
1 BCKIN
Figure 9 DSP Early Mode Timing Diagram
DSP LATE MODE
In DSP late mode, the first bit is sampled on the BCKIN edge which detects a low to high transition on
LRCIN.
LRCIN
BCKIN
DIN0
Input Word Length (IWL)
1/fs
CHANNEL 0
LEFT
n
2
1
n-1
LSB
MSB
n
2
1
n-1
CHANNEL 0
RIGHT
2
1
CHANNEL 1
LEFT
n
n-1
CHANNEL 2
RIGHT
NO VALID DATA
1
Figure 10 DSP Late Mode Timing Diagram
In both early and late DSP modes, DAC0 left is always sent first, followed immediately by data words for
the other 5 channels. No BCKIN edges are allowed between the data words. The word order is DAC0 left,
DAC0 right, DAC1 left, DAC1 right, DAC2 left, DAC2 right.
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