w681308 Winbond Electronics Corp America, w681308 Datasheet - Page 53

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

module is a bridge to communicate SIE and all transfer type modules. Register Control module is for handle MCU read/write
and data signals of W681
data in audio volume con
from outside.
The features of USB interface are:
19.2.1
The definitions of embedded endpoints are:
NOTE: TPRAM - Dual Ports RAM
Address
USB Specification version 2.
Audio Class Interface and Command support (Volume Control, Mute Control, Sampling Rate selection)
HID Class Interface and Command
Programmable pull-up resistor to connect/disconn
Support five interfaces and 6 endpoints: Control,
Ping-Pong FIFO control for Bulk IN/Bulk OUT transfer to increase data transmission efficiency.
Provide three bytes Isochronous SYNC to synchronize Isochronous OUT with PC audio data stream and improve voice
quality.
6*
0
1
2
3
4
5
Endpoints
Interrupt
Control
Type
Bulk
Bulk
ISO
ISO
ISO
trol application. USB test module connects many internal signals to test pins for help monitor them
308 USB registers. Gain Stage residing out off USB module is required for adjusts gain of PCM
Direction
IN/OUT
OUT
OUT
IN
IN
IN
IN
0 Full Speed(FS) 12Mbps compliant
Table 12 W681308 USB Endpoint Definitions
support (Set/Get Report)
maximum Packet Size (Bytes)
Isochronous IN/OUT, Bulk IN/OUT, and Interrupt IN.
ect 1.5Kohm on D+ bus
XXXX PRODUCT DESCRIPTION
256
256
128
128
64
64
3
53
128x16 TPRAM
128x16 TPRAM
128 x 8 TPRAM
128 x 8 TPRAM
Memory Type
64x8 TPRAM
64x8 TPRAM
Registers
W681308
Rev1.2