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[ADAU1761] It can't sound from HP out

Hello, I'm working with the EVAL-AD2428WB1BZ which is an evaluation board for A2B.

The A2B slave generates I2S signal which has 48K / 16bit / Stereo parameters and I've configured the registers of ADAU1761 AMP IC, but it doesn't sound anything to the HP out.

The BCLK Source is from A2B IC(AD2428) with 12.288Mhz Freq. and I've configured below registers of the ADAU1761:

//PLL LOCK Acquire

0x4002:0x4007 = 0x00 0x00 0x00 0x00 0x20 0x01

//Check PLL Locking and I've checked the 0x4007 is set to 0x03.

//CORE CLOCK ENABLE from PLL

0x4000 = 0x09

//SERIAL CTRL with pulse not 50% duty cycle.

0x4015 = 0x20

//SERIAL TO DAC

0x40F2 = 0x01

//DAC Enable

0x402A = 0x03

//MIXER 3&4 Enable

0x401C = 0x21

0x401E = 0x41

//HP OUT Enable

0x4023 = 0xF7

0x4024 = 0xF7

Here is the register dump of the ADAU1761 started from 0x4000;

09 00 00 00 00 00 20 03 00 00 00 00 00 10 00 00
00 00 00 00 00 20 00 00 00 00 00 00 21 00 41 00
00 00 00 F7 F7 00 00 00 00 00 03 00 00 AA 00 AA
00 0A 3F 3F 1F 00 03 F0 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 10 00 00 01 00
00 00 00 04 00 00 01 00 00 10 00 01 00 00 00 00
00 00 01 00 00 00 00 00 00 00 00

Is there anything I need to configure more ?

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