ak4342 AKM Semiconductor, Inc., ak4342 Datasheet - Page 29

• Manufacturer Part Number: ak4342
• Description: 24-bit Stereo Dac With Hp-amp & 2v Line-out
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
1. 3-wire Serial Control Mode (I2C pin = “L”)
Internal registers may be written by using the 3-wire µP interface pins (CSN, CCLK and CDTI). 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 CSN falling edge (“↓”). Clock speed of CCLK is 5MHz (max). The value of internal registers are initialized by PDN
pin = “L”.
MS0506-E-02
Serial Control Interface
CCLK
CSN
CDTI
C1
0
C0
1
R/W
2
C1-C0:
R/W:
A4-A0: Register Address
D7-D0: Control Data
Figure 21. Serial Control I/F Timing
A4
3
A3
4
A2
Chip Address (Fixed to “01”)
READ/WRITE (Fixed to “1”, Write only)
5
A1
6
A0
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7
D7
8
D6
9
D5
10 11 12 13 14 15
D4
D3
D2
D1
D0
[AK4342]
2006/07