AK4343 Datasheet, PDF (64/98 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

ASAHI KASEI
[AK4343]
„ Serial Control Interface
(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 1-bit Chip address (Fixed to “1”), Read/Write (Fixed to “1”), Register address (MSB first, 6bits) 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”.
CSN
CCLK
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
CDTI
C1 A5 R/W A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
“1”
“1”
C1:
R/W:
A5-A0:
D7-D0:
Chip Address; Fixed to “1”
READ/WRITE (“1”: WRITE, “0”: READ); Fixed to “1”
Register Address
Control data
Figure 62. Serial Control I/F Timing
MS0478-E-01
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2006/10