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PDF VT1620A Data sheet ( Hoja de datos )

Número de pieza VT1620A
Descripción VinylUSB USB2.0 FS Audio Codec
Fabricantes VIA 
Logotipo VIA Logotipo



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Data Sheet
VT1620A
VinylUSB USB2.0 FS Audio Codec
April 22, 2010
Revision 1.01

1 page




VT1620A pdf
Data Sheet
VT1620A VinylUSB USB2.0 FS Audio Codec
1
1 Product Features
VT1620A
VinylUSB USB2.0 FS Audio Codec
USB Interface
USB transceiver integrated
USB 2.0 full speed compliant
USB audio device class specification
v1.0 compliant
USB Device Firmware Upgrade v1.1
compliant
Supports one Control Endpoint, one
Isochronous Out Endpoint, one
Isochronous In Endpoint, one
Feedback Endpoint and one Interrupt
Endpoint.
Alternative zero bandwidth setting to
save USB bus bandwidth while the
device in idle status
USB HID volume, mute, and GIO
support
Supports suspend, resume and remote
wake-up
Adaptive clock generator for audio
streaming synchronization
USB Feedback endpoint support to
enable lossless audio quality
MCU
Embedded 8032 with ICE mode
support
Built-in 16k ROM for firmware; no
extra Flash required
Optional External Serial Flash for
firmware, Max. 64k
External Serial Flash for vendor
specific VID, PID and Serial Number
I2C Interface
Supports both slave mode and master
mode
Supports wait-states
Up to 400 kb/s data transfer rate
Audio Capabilities
SPDIF TX audio interface (1 port)
ΠFull duplex 16-, 20-, 24-bit mono-
or 2-channel
Π44.1 kHz, 48 kHz, 96 kHz, 192 kHz
sampling rates
Embedded Audio CODEC
ΠADC SNR 90 dB and THD -80 dB
ΠDAC SNR 95 dB and THD -85 dB
Π2-ch 16/24-bit ADC, supporting
44.1 kHz, 48 kHz, 96 kHz, 192 kHz
sampling rates
Π2-ch 16/24-bit DAC, supporting
44.1 kHz, 48 kHz, 96 KHz, 192
kHz sampling rates
ΠLeft / Right channel exchange for
both ADC and DAC.
ΠNoise Gate
ΠALC for ADC
ΠEmbedded headphone amplifier
Audio Device Configuration
MIC-Array: 2-ch microphone
MIC-Array & mono speaker: 2-ch
microphone & 2-ch stereo output
Headset: 1-ch microphone & 2-ch
stereo output
VoIP: 1-ch microphone & 2-ch stereo
output & HID
Capless headphone
AA path support
Specific and General IO Interface
Record-mute LED
Device-in-operation LED
Buzz output
General IO pins
Miscellaneous
Single 6-MHz Crystal input with
on-chip PLL.
USB bus-powered device, with built-in
5-V to 3.3-V and 5-V to 2-V regulator
Independent sample rate for playback
and recording.

5 Page





VT1620A arduino
Data Sheet
VT1620A VinylUSB USB2.0 FS Audio Codec
7
6 Memory Map
The 8051 family’s memory is organized in a Harvard structure, which means the program memory and
data memory are located in the separate address spaces. The 16 address lines can access up to 64k byte
space.
6.1 Program Memory Space
Since the 8032 core embedded in VT1620A is a ROMless version of 8051, all the program memories used
by VT1620A are considered as “External memory” in the point of view of 8032 core.
Table 2 – Program Memory Space of VT1620A
Byte Address Range
0x0000 – 0x0FFF
0x1000 – 0x3FFF
0x4000 – 0xFFFF
On-chip (Note 1.)
Built-in ROM /
EP1/2 Buffer (Note 2.)
Built-in ROM
--
Off-chip (Note 1.) Size in bytes
Serial Flash
4k
Data Access
8 bits R/W
Serial Flash
Serial Flash
12k
48k
8 bits R/W
8 bits R/W
Note:
1. When boot from ROM is selected by the strapping option, on-chip space will be used as the program
memory. When boot from ROM is not selected by the strapping option, off-chip space will be used
as the program memory.
2. When updating firmware in the off-chip program memory, EP1/2 SRAM is used as the temporary
program memory storage. Under this mode, the lowest 4k address will be mapped to EP1/2 buffer.
6.2 Data Memory Space
The 256 bytes of internal registers and up to 64k bytes of external data memory can be accessed by the
8032 core. (The boundary of internal/external is the 8032 core.)
6.3 MCU Internal Registers
Please refer to the following Table 3 for the memory map of MCU Internal Registers.
1
Table 3 – Memory Map of MCU Internal Registers
Byte Address Range
0x0000 – 0x001F
0x0020 – 0x002F
0x0030 – 0x007F
0x0080 – 0x00FF
On-chip
4 banks of R0-R7
Bit addressable 0x00-0x7F
Rest of lower 128
Direct/indirect addressing
Upper 128
indirect addressing only
SFR
direct addressing
Off-chip
--
--
--
--
Size in Bytes
32
16
80
128
Data Access
8 bits R/W
1/8 bits R/W
8 bits R/W
8 bits R/W
1/8 bits R/W

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