ACS422A68TAGZBX8 IDT, ACS422A68TAGZBX8 Datasheet - Page 21

• Manufacturer Part Number: ACS422A68TAGZBX8
• Description: Interface - CODECs
• Manufacturer: IDT

Specifications of ACS422A68TAGZBX8

• Rohs: yes
• Part # Aliases: IDTACS422A68TAGZBX8

ACS422x68
LOW-POWER, HIGH-FIDELITY, INTEGRATED CODEC
©2011 INTEGRATED DEVICE TECHNOLOGY, INC.
•
Addr
0x8C
0x8D
0x80
0x81
0x82
0x83
0x84
0x85
0x86
0x87
0x88
0x89
0x8A
0x8B
0x8E
0x8F
0x90
0x91
0x92
0x93
0x94
0x95
0x96
1.All B0 coefficients are set to unity (400000h) by default. All others, including M1 and M2, are 0 by default.
2.NLF coefficients (M1, M2) have a range defined as +/-8, with 1 sign bit, 3 integer bits, and 20 fraction bits. So, unity for these
DACCRAM Bass/Treble Addresses
3.5.
The gain for a given channel is controlled by the DACVOL registers. The range of gain supported is from -95.625db to
0db in 0.375db steps.
If the result of the gain multiply step would result in overflow of the 24-bit output word width, the output is saturated at
the max positive or negative value.
In addition to simple gain control, the ACS422x68 also provides sophisticated dynamic range control. The dynamic
values is 100000h. This is as opposed to the rest of the coefficient RAM, which has a range defined as +/-2, with 1 sign bit,
1 integer bit, and 22 fraction bits.
BASS_COEF_EXT1_B0
BASS_COEF_EXT1_B1
BASS_COEF_EXT1_B2
BASS_COEF_EXT1_A1
BASS_COEF_EXT1_A2
BASS_COEF_EXT2_B0
BASS_COEF_EXT2_B1
BASS_COEF_EXT2_B2
BASS_COEF_EXT2_A1
BASS_COEF_EXT2_A2
BASS_COEF_NLF_M1
Gain and Dynamic Range Control
BASS_COEF_NLF_M2
BASS_COEF_CTO_B0
BASS_COEF_CTO_B1
BASS_COEF_CTO_B2
BASS_COEF_CTO_A1
BASS_COEF_CTO_A2
BASS_COEF_LMT_B0
BASS_COEF_LMT_B1
BASS_COEF_LMT_B2
BASS_COEF_LMT_A1
BASS_COEF_LMT_A2
Coefficients
BASS_MIX
Bass
1
2
Table 14. DACCRAM Bass/Treble Addresses
0xAC
0xAD
Addr
0x9A
0x9B
0x9C
0x9D
0x9E
0xA0
0xA1
0xA2
0xA3
0xA4
0xA5
0xA6
0xA7
0xA8
0xA9
0xAA
0xAB
0x97
0x98
0x99
0x9F
TREB_COEF_EXT1_B0
TREB_COEF_EXT1_B1
TREB_COEF_EXT1_B2
TREB_COEF_EXT1_A1
TREB_COEF_EXT1_A2
TREB_COEF_EXT2_B0
TREB_COEF_EXT2_B1
TREB_COEF_EXT2_B2
TREB_COEF_EXT2_A1
TREB_COEF_EXT2_A2
TREB_COEF_NLF_M1
TREB_COEF_NLF_M2
TREB_COEF_LMT_B0
TREB_COEF_LMT_B1
TREB_COEF_LMT_B2
TREB_COEF_LMT_A1
TREB_COEF_LMT_A2
TREB_COEF_CTO_B0
TREB_COEF_CTO_B1
TREB_COEF_CTO_B2
TREB_COEF_CTO_A1
TREB_COEF_CTO_A2
Coefficients
TREB_MIX
21
Treble
Addr
0xAE
0xAF
Coefficients
3D_COEF
3D_MIX
3D
ACS422X68
V1.6 01/13