w681308 Winbond Electronics Corp America, w681308 Datasheet - Page 36

• Manufacturer Part Number: w681308
• Description: Usb Audio Controller
• Manufacturer: Winbond Electronics Corp America

12.
12.1
The PCM module is a 16-bit parallel/serial data transfer interface. It transfers the 16 bits data from Gain-Stage/Mixer to single
bit Output, and transfers the one bit signal data of Input pin to 16 bits data buffer to the Gain-Stage / Mixer. In normal
oper
PCM Interface specific
12.2
T
of +24 dB to –31.5 dB with 0.5 dB per step. The Figure 5 is shown the location of these digital gain stages. There are 2 side
tone paths to select from: On
0.5dB step.
here are 6 programmable gain stages for transmit and receive path. These gain stages are implemented to provide a range
ation, the FS and BCLK are generated from the analog PLL module.
Master M
Support TX / RX path mute
8 PCM Bit Cloc
3 freque
16 bit length se
4 selection of
PCM_FS & PCM_BCLK inv
PCM Interface , Gain Stage and Mixer
PCM Interface
Gain stage
ncy selection of the
ode
Only
PCM FS/DAT
k frequency : 1
lection of the
ation:
e before AEC block, one after AEC block. Side tone gain stage is from -0.5dB to -31.5dB with
A location + 1 half bit clock delay.
erse mode for I2S interface.
PCM Frame Sync (FS)
PCM Frame Sync (FS) : 1~ 16 bits.
Figure 5 PCM Interface, Gain Stage and Mixer Location
28K, 256K, 512K, 768K, 1M, 1.536M, 2M, 4
XXXX PRODUCT DESCRIPTION
: 8K, 16K and 48K Hz.
36
M Hz.
W681308
Rev1.2