ak5702 AKM Semiconductor, Inc., ak5702 Datasheet - Page 67

• Manufacturer Part Number: ak5702
• Description: 4-channel Adc With Pll & Mic-amp
• Manufacturer: AKM Semiconductor, Inc.

MS0623-E-00
Power Supply
Internal Clock
PMVCM bit
(Addr:00H, D2)
(Addr:01H, D0)
2. PLL Slave Mode (LRCK or BCLK pin)
PMPLL bit
<Example>
BCLK pin
LRCK pin
PDN pin
(1) After Power Up: PDN pin “L” → “H”
(5) Normal operation stats after that the PLL is locked.
(2) DIF1-0, FS3-0 and PLL3-0 bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = “0” → “1”
(4) PLL starts after the PMPLL bit changes from “0” to “1” and PLL reference clock (LRCK or BCLK pin) is
supplied. PLL lock time is 160ms(max) when LRCK is a PLL reference clock. PLL lock time is 2ms(max) when
BCLK is a PLL reference clock and the external circuit at VCOC pin is 10k+4.7nF (Table 4).
“L” time of 150ns or more is needed to reset the AK5702.
VCOM should first be powered up before the other block operates.
(1)
(2)
(3)
Figure 60. Clock Set Up Sequence (2)
Input
(4)
- 67 -
(5)
4fs of
(1) Power Supply & PDN pin = “L”
Example:
Audio I/F Format : I2S
PLL Reference clock: BCLK
BCLK frequency: 64fs
Sampling Frequency: 44.1kHz
(2) Addr:01H, Data:0CH
(4) Addr:01H, Data:0DH
(3) Addr:00H, Data:04H
Addr:04H, Data:23H
Addr:05H, Data:2FH
[AK5702]
“H”
2007/06