AK4371VN AKM [Asahi Kasei Microsystems], AK4371VN Datasheet - Page 44

• Manufacturer Part Number: AK4371VN
• Description: DAC with built-in PLL & HP-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

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(1) 3-wire Serial Control Mode (I2C pin = “L”)
Internal registers may be written to via the 3-wire μP interface pins (CSN, CCLK and CDTI). The data on this interface
consists of the Chip address (2-bits, Fixed to “01”), Read/Write (1-bit, Fixed to “1”, Write only), Register address (MSB
first, 5-bits) and Control data (MSB first, 8-bits). Address and data are clocked in on the rising edge of CCLK. For write
operations, the data is latched after a low-to-high transition of the 16th CCLK. CSN should be set to “H” once after 16
CCLKs for each address. The clock speed of CCLK is 5MHz(max). The value of the internal registers is initialized at
PDN pin = “L”.
MS0596-E-00
Serial Control Interface
CCLK
CSN
CDTI
C1
0
C0
1
R/W
Figure 35. 3-wire Serial Control I/F Timing
2
C1-C0:
R/W:
A4-A0: Register Address
D7-D0: Control Data
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
[AK4371]
2007/04