92HD90B0X5NLGXYAX8 IDT, 92HD90B0X5NLGXYAX8 Datasheet - Page 39

• Manufacturer Part Number: 92HD90B0X5NLGXYAX8
• Description: Interface - CODECs
• Manufacturer: IDT

Specifications of 92HD90B0X5NLGXYAX8

• Rohs: yes
• Part # Aliases: IDT92HD90B0X5NLGXYAX8

92HD98
SINGLE CHIP PC AUDIO SYSTEM, CODEC+MONO SPEAKER AMPLIFIER+CAPLESS HP+LDO
IDT CONFIDENTIAL
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
LRCLK
DOUT /
LRCLK
DOUT /
SCLK
SCLK
LRCLK
DOUT /
DIN
2.27. Microphone Mute Input
DIN
SCLK
DIN
Left Justified
Right Justified
I2S
Previous Sample
Previous Sample
Previous Sample
2.26.2. Left Justified Audio Interface
2.26.3. Right Justified Audio Interface (assuming n-bit word length)
2.26.4. I
L23
L23
L22
L22
In Left Justified mode, the MSB is available on the first rising edge of SCLK following a LRCLK tran-
sition. The other bits are then transmitted in order. The LRCLK signal is high when left channel data
is present and low when right channel data is present.
In Right Justified mode, the LSB is available on the last rising edge of SCLK before a LRCLK transi-
tion. All other bits are transmitted in order. The LRCLK signal is high when left channel data is pres-
ent and low when right channel data is present.
In I
The other bits up to the LSB are then transmitted in order.
The 92HD93 supports a microphone mute input. An external switch or other circuit may directly
mute the CODEC without relying on software control. This is a most helpful feature for allowing the
2
L21
L21
S Format Audio Interface
L20 L19
L20 L19
2
Left Channel
Left Channel
Figure 12. Right Justified Audio Interface (assuming 24-bit word length)
Left Channel
S mode, the MSB is available on the second rising edge of SCLK following a LRCLK transition.
0
Figure 11. Left Justified Audio Interface (assuming 24-bit word length)
Figure 13. I
L18
L18
L17
L17
L16 L15
L16 L15
L23
L14
L14
L22
2
L13
L13
S Justified Audio Interface (assuming 24-bit word length)
Word Length (WL)
Word Length (WL)
L21
L12 L11
L12 L11
L20 L19
L10
L10
L18
L09
L09
L17
Fs/2
L08 L07
L08 L07
L16 L15
Fs/2
Fs/2
L06
L06
L14
L05
L05
L13
Word Length (WL)
L04 L03
L04 L03
L12 L11
39
L02
L02
L10
L01
L01
L09
L00
L00
L08 L07
L06
L05
0
0
L04 L03
L02
L01
L00
R23
R23
R22
R22
R21
R21
Right Channel
R20
R20
Right Channel
Right Channel
0
R19
R19
R18
R18
R17
R17
R16 R15
R16 R15
R23
R14
R14
R22
R13
R13
R21
V 1.2 3/12
92HD98