ak4117 AKM Semiconductor, Inc., ak4117 Datasheet - Page 23

• Manufacturer Part Number: ak4117
• Description: Low Power 192khz Digital Audio Receiver
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The internal registers may be either written or read by the 4-wire µP interface pins: CSN, CCLK, CDTI & CDTO. The
data on this interface consists of Chip address (2bits, C1-0 are fixed to “00”), Read/Write (1bit), Register address (MSB
first, 5bits) and Control data (MSB first, 8bits). Address and data are clocked in on the rising edge of CCLK and data is
clocked out on the falling edge. For write operations, data is latched after the 16th rising edge of CCLK, after a
high-to-low transition of CSN. For read operations, the CDTO output goes high impedance after a low-to-high transition
of CSN. The maximum speed of CCLK is 5MHz. PDN= “L” resets the registers to their default values.
MS0157-E-03
Serial Control Interface
WRITE
READ
CCLK
CDTO
CSN
CDTI
CDTI
CDTO
C1
C1
0
Figure 25. 4-wire Serial Control I/F Timing
C1,C0:
R/W:
A4-A0:
D7-D0:
C0
C0
1
R/W
R/W
2
A4
A4
3
Chip Address (Fixed to “00”)
READ/WRITE (0:READ, 1:WRITE)
Register Address
Control Data
A3
A3
4
A2
- 23 -
A2
5
Hi-Z
Hi-Z
A1
A1
6
A0
A0
7
D7
D7
D7
8
D6
D6
D6
9
D5
D5
10 11 12 13 14 15
D5
D4
D4
D4
D3
D3
D3
D2
D2
D2
D1
D1
D1
D0
D0
D0
Hi-Z
[AK4117]
2004/04