AK4536 Datasheet, PDF (35/59 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4536]
n Serial Control Interface
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 2-bit Chip address (Fixed to “10”), Read/Write (Fixed to “1”), Register address (MSB first, 5bits) and Control
data (MSB first, 8bits). Address and data is clocked in on the rising edge of CCLK and data is clocked out on the falling
edge. The clock speed of CCLK is 5MHz (max). The value of internal registers is initialized at PDN pin = “L”.
CSN
CCLK
CDTI
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
C1 C0 R/W A4 A3 A2 A2 A0 D7 D6 D5 D4 D3 D2 D1 D0
“1” “0” “1”
C1-C2:
R/W:
A4-A0:
D7-D0:
Chip Address (C1 = “1”, C0 = “0”); Fixed to “10”
READ/WRITE (“1”: WRITE, “0”: READ); Fixed to “1”
Register Address
Control data
Figure 31. Serial Control I/F Timing
MS0174-E-00
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2002/09