AK4691EG AKM [Asahi Kasei Microsystems], AK4691EG Datasheet - Page 59

• Manufacturer Part Number: AK4691EG
• Description: 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

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(1) 3-wire Serial Control Mode (I2CN pin = “H”)
(1)-1. Specific address WRITE Mode
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. Writing data becomes effective between
the 16th CCLK rising edge (“ ↑ ”) and CSN rising edge (“ ↑ ”) after CSN falling edge(“ ↓ ”). CSN should be set to “H” every
one command. Clock speed of CCLK is 5MHz (max). The value of internal registers are initialized by the PDN pin = “L”.
MS0672-E-00
Serial Control Interface
CSN
CCLK
CDTI
Clock, “H” or “L”
“H” or “L”
C1:
R/W:
A5-A0:
D7-D0:
C1 A5
“1”
0
1
R/W
Figure 40. Serial Control I/F Timing 1
“1”
2
Chip Address; Fixed to “1”
READ/WRITE (“1”: WRITE, “0”: READ); Fixed to “1”
Register Address
Control data
A4
3
A3
4
A2
5
A1 A0
- 59 -
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”
[AK4691]
2007/11