ak4528 AKM Semiconductor, Inc., ak4528 Datasheet - Page 11

• Manufacturer Part Number: ak4528
• Description: High Performance 24bit 96khz Audio Codec
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The external clocks, which are required to AK4528, are MCLK, BICK and LRCK. MCLK should be synchronized with
LRCK but the phase is not critical. The frequency of MCLK is set by CMODE, CKS0-1 and DFS bits in serial mode, or
by CKS0-1, DFS pins in parallel mode (see Table 2 and 3). The CKS0-1 and DFS pin should be changed during the PDN
pin = “L”. The CMODE, CKS0-1 and DFS bits are changed during RSTADN = RSTDAN = “0”.
External clocks (MCLK, BICK and LRCK) should always be present whenever the AK4528 is in normal operation mode
(PDN = “H” and at least one of ADC and DAC is in normal operation mode). If these clocks are not provided, the
AK4528 may draw excess current because the device utilizes dynamic refreshed logic internally. If the external clocks are
not present, the AK4528 should be in the power-down mode (PDN = “L” or set both ADC and DAC power down mode
by the register).
MS0011-E-01
System Clock Input
Normal Speed
(DFS = “0”)
CMODE bit
MCLK
1024fs
256fs
512fs
384fs
768fs
0
0
0
1
1
CKS1 pin
CKS1 bit
H
H
L
L
11.2896MHz
22.5792MHz
45.1584MHz
16.9344MHz
33.8688MHz
fs=44.1kHz
Note. Do not set any mode which is not described in Table1-3.
0
0
1
0
0
Table 2. Master Clock Frequency Select in Parallel Mode
Table 1. Master Clock Frequency Select in Serial Mode
CKS0 pin
Table 3. Master Clock Frequencies example
CKS0 bit
H
H
L
L
0
1
0
0
1
12.288MHz
24.576MHz
49.152MHz
18.432MHz
36.864MHz
OPERATION OVERVIEW
fs=48kHz
(DFS pin = “L”)
Normal Speed
(DFS bit = “0”)
Normal Speed
MCLK
1024fs
- 11 -
256fs
512fs
384fs
MCLK
1024fs
256fs
512fs
384fs
768fs
Double Speed
(DFS = “1”)
MCLK
256fs
512fs
384fs
N/A
N/A
(DFS pin = “H”)
(DFS bit = “1”)
Double Speed
Double Speed
MCLK
MCLK
256fs
512fs
N/A
N/A
256fs
512fs
384fs
22.5792MHz
45.1584MHz
33.8688MHz
N/A
N/A
fs=88.2kHz
N/A
N/A
Default
24.576MHz
49.152MHz
36.864MHz
fs=96kHz
N/A
N/A
[AK4528]
2004/01