ak4373 ETC-unknow, ak4373 Datasheet - Page 67

• Manufacturer Part Number: ak4373
• Description: Low Power Stereo Dac With Hp/spk-amp
• Manufacturer: ETC-unknow

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(1) 3-wire Serial Control Mode (I2C pin = “L”) Write Only
Internal registers may be written by using the 3-wire µP interface pins (CSN, CCLK and CDTI). The data on this interface
consists of Read/Write (Fixed to “1”), Register address (MSB first, 7bits) 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(“↓”). Clock speed of CCLK is 5MHz (max). The value of internal registers are initialized by PDN pin = “L”.
MS0991-E-00
Serial Control Interface
CSN
CCLK
CDTI
Clock, “H” or “L”
“H” or “L”
R/W:
A6-A0:
D7-D0:
A6 A5
0
1
R/W
“1”
Figure 58. Serial Control I/F Timing
2
READ/WRITE (“1”: WRITE, “0”: READ); Fixed to “1”
Register Address
Control data
A4
3
A3
4
A2
5
A1 A0
- 67 -
6
7
D7 D6 D5 D4 D3 D2 D1 D0
8
9
10 11 12 13 14 15
Clock, “H” or “L”
“H” or “L”
[AK4373]
2008/09