w681308 Winbond Electronics Corp America, w681308 Datasheet - Page 50

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

16.4
TB51 will start to execute internal code after power on reset. If host JTAG ICE connects with TB51, the host ICE can send
command to control the TB51.
17.
17.1
The ring tone or PW
mixed to the speakerph
Modulation) format.
Ring tone generator (PWM) specification:
The
Power On Reset
Reset by RESET pin or WDT
RESET (including set Reset
out and Reset in SC0)
nTRST Low
Tone Channel Number = 2
Tone Volume Step = 32
Tone Frequency Range = 91Hz~23KHz
tone frequenc
Reset Behavior
Ring Tone (PWM) Generator
Overview
Reset type
y/volu
M can generate dual frequency tones through on chip speaker driver. T
one driver output. This subsection describes the Ring Tone Ge
me control si
1. Reset MCU
2. Reset JTAG. TAP controller will stay in Test-Logic Reset State.
3. Execution starts from address 0000 after reset.
1. Reset Chip.
2. Do not reset JTAG. TAP controller stays in the original state.
3. If the original TAP controller state is in run mode, chip reset
4. If the original TAP controlle
1. No effect on MCU.
2. Reset JTAG. TAP controller will stay in Test-Logic Reset state.
gnal path is shown as Figure 13.
Frequency
Figure 13 Ring Tone Generator Block
=
16
XXXX PRODUCT DESCRIPTION
×
12
N
50
M
r state is in Halt mode. No any state changed
×
32
Functional description
Hz
N
=
1
~
nerator with the PWM (Pulse Width
256
here are two tone signals can be
W681308
Rev1.2