W681308
XXXX PRODUCT DESCRIPTION
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 W681308 USB registers. Gain Stage residing out off USB module is required for adjusts gain of PCM
data in audio volume control application. USB test module connects many internal signals to test pins for help monitor them
from outside.
The features of USB interface are:
USB Specification version 2.0 Full Speed(FS) 12Mbps compliant
Audio Class Interface and Command support (Volume Control, Mute Control, Sampling Rate selection)
HID Class Interface and Command support (Set/Get Report)
Programmable pull-up resistor to connect/disconnect 1.5Kohm on D+ bus
Support five interfaces and 6 endpoints: Control, Isochronous IN/OUT, Bulk IN/OUT, and Interrupt IN.
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.
19.2.1
Endpoints
The definitions of embedded endpoints are:
Address
Type
Control
ISO
Direction
IN/OUT
IN
maximum Packet Size (Bytes)
Memory Type
64x8 TPRAM
128x16 TPRAM
128x16 TPRAM
128 x 8 TPRAM
128 x 8 TPRAM
64x8 TPRAM
Registers
0
1
64
256
256
128
128
64
2
ISO
OUT
IN
3
Bulk
4
Bulk
OUT
IN
5
Interrupt
ISO
6*
IN
3
Table 12 W681308 USB Endpoint Definitions
NOTE: TPRAM - Dual Ports RAM
53
Rev1.2
NUVOTEM TALEMA [ NUVOTEM TALEMA ]
