ak4614 ETC-unknow, ak4614 Datasheet - Page 51

• Manufacturer Part Number: ak4614
• Description: 6/12-channel Audio Codec
• Manufacturer: ETC-unknow

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The AK4614’s functions are controlled through registers. The registers may be written by two types of control modes.
The chip address is determined by the state of the CAD0 and CAD1 inputs. The PDN pin = “L” initializes the registers to
their default values. Writing “0” to the RSTN bit can initialize the internal timing circuit, but the register data will not be
initialized.
(1) 4-wire Serial Control Mode (I2C pin = “L”)
The internal registers may be written through the 4-wire µP interface pins (CSN, CCLK, CDTI and CDTO). The data on
this interface consists of a 2-bit Chip address, Read/Write, Register address (MSB first, 5bits) and Control data (MSB
first, 8bits). The chip address high bit is fixed to “1” and the lower bit is set by the CAD0 pin. Address and data are
clocked in on the rising edge of CCLK and data is clocked out on the falling edge. After a low-to-high transition of CSN,
data is latched for write operations and CDTO bit outputs Hi-Z. The clock speed of CCLK is 5MHz (max). The value of
internal registers is initialized when the PDN pin = “L”.
MS1025-E-00
WRITE
READ
Serial Control Interface
CCLK
CDTO
CDTO
CSN
CDTI
CDTI
“H” or “L”
“H” or “L”
“H” or “L”
C1 – C0: Chip Address (C1=CAD1, C0=CA0)
R/W: READ / WRITE (“1”: WRITE, “0”: READ)
A4 - A0: Register Address
D7 – D0: Control Data
C1
C1
0
C0
C0
1
R/W
R/W
2
Figure 49. Serial Control I/F Timing
A4
A4
3
A3
A3
4
A2
A2
5
Hi-Z
Hi-Z
A1
A1
6
- 51 -
A0
A0
7
D7
D7
8
D6
D6
9
D5
D5
10 11 12 13 14 15
D4
D4
D3
“H” or “L”
D3
D2
D2
D1
D1
D0
D0
“H” or “L”
“H” or “L”
Hi-Z
2008/10