參數(shù)資料
型號(hào)： AK5701_07
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 16-Bit ツヒ Stereo ADC with PLL & MIC-AMP
中文描述： 16位ツヒ立體聲ADC帶鎖相環(huán)
文件頁(yè)數(shù)： 40/64頁(yè)
文件大?。?/td> 747K
代理商： AK5701_07
[AK5701]
■
Serial Control Interface
Internal registers may be written by using the 3-wire μP interface pins (CSN, CCLK and CDTI). The CSP pin selects the
polarity of the CSN pin and chip address.
1)
CSP pin = “L”
The data on this interface consists of a 2-bit Chip address (Fixed to “10”), Read/Write (Fixed to “1”), Register address
(MSB first, 5bits) and Control data (MSB first, 8bits). Each bit is clocked in on the rising edge (“
↑
”) of CCLK. Address
and data are latched on the 16th CCLK rising edge (“
↑
”) after CSN falling edge(“
↓
”). CSN should be set to “H” once after
16 CCLKs for each address. Clock speed of CCLK is 7MHz (max). The value of internal registers are initialized by the
PDN pin = “L”.
CSN
CCLK
0
1
2
3
4
5
6
7
8
9
10
11 12
13 14 15
CDTI
C1 C0
A2
A3
A1 A0
A4
D7 D6 D5 D4 D3 D2 D1 D0
R/W
C1-C0: Chip Address (C1 = “1”, C0 = CAD0) ; Fixed to “10”
R/W:
READ/WRITE (“1”: WRITE, “0”: READ); Fixed to “1”
A4-A0: Register Address
D7-D0: Control data
Clock, “H” or “L”
“H” or “L”
Clock, “H” or “L”
“H” or “L”
Figure 41. Serial Control I/F Timing (CSP pin = “L”)
2)
CSP pin = “H”
The data on this interface consists of a 2-bit Chip address (Fixed to “01”), Read/Write (Fixed to “1”), Register address
(MSB first, 5bits) and Control data (MSB first, 8bits). Each bit is clocked in on the rising edge (“
↑
”) of CCLK. Address
and data are latched on the 16th CCLK rising edge (“
↑
”) after CSN rising edge(“
↑
”). CSN should be set to “L” once after
16 CCLKs for each address. Clock speed of CCLK is 7MHz (max). The value of internal registers are initialized by the
PDN pin = “L”.
CSN
CCLK
0
1
2
3
4
5
6
7
8
9
10
11 12
13 14 15
CDTI
C1 C0
A2
A3
A1 A0
A4
D7 D6 D5 D4 D3 D2 D1 D0
R/W
C1-C0: Chip Address (C1 = “0”, C0 = CAD1) ; Fixed to “01”
R/W:
READ/WRITE (“1”: WRITE, “0”: READ); Fixed to “1”
A4-A0: Register Address
D7-D0: Control data
Clock, “H” or “L”
“H” or “L”
Clock, “H” or “L”
“H” or “L”
Figure 42. Serial Control I/F Timing (CSP pin = “H”)
MS0404-E-02
2007/08
- 40 -
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