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參數(shù)資料
| 型號(hào)： | DS4201 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | USB Audio DAC(USB音頻數(shù)模轉(zhuǎn)換器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP28 |
| 封裝： | 0.600 INCH, DIP-28 |
| 文件頁數(shù)： | 2/22頁 |
| 文件大?。?/td> | 178K |
| 代理商： | DS4201 |
DS4201
060898 2/22
Digital–to–analog audio data processing supports 8 and
16 bit PCM stereo/mono formats at 44.1 KHz and 48.0
KHz sampling rates. Additionally, analog output mixing
of line and microphone inputs provide legacy and hybrid
speaker capabilities.
The DS4201 USB function core fully complies with both
the USB Specification v1.0 and the USB Device Class
Definition for Audio Devices v1.0. To complete the USB
capability of the DS4201, a USB compliant transceiver
is integrated to eliminate the need for any additional
support chips. Organization of the DS4201 in an USB
context is shown in Figure 2. For the USB enabled PC,
the DS4201 is an ideal digital output solution for high
quality audio and control within the speaker or monitor
enclosure. Its USB control and capabilities as well as its
high quality audio characteristics also comply with next
generation PC system and audio standards put forth by
industry leaders.
RELATED DOCUMENTS
This data sheet references or complies with the follow-
ing USB specifications which are considered to be part
of the DS4201 device specification. These documents
may be obtained from the USB Implementers Forum
web site: www.usb.org.
Universal Serial Bus Specification, Revision 1.0
Universal Serial Bus Device Class Definition for Audio
Devices, Revision 1.0.
FUNCTIONAL BLOCK DIAGRAM
Figure 1
POWER
VOLTAGE
REFERENCE
OSCILLATORS
POWER
MANAGEMENT
D+
D–
USB
XCVR
USB
DEVICE
CORE
SUSO
LEFT
FIFO
194 BYTES
RIGHT
FIFO
194 BYTES
DEVICE
CONTROL
16–BIT
Σ
D/A
ATTN/MUTE
Σ
LOUT
16–BIT
Σ
D/A
ATTN/MUTE
Σ
ATTN/MUTE
ATTN/MUTE
ROUT
LAUX
RAUX
LMIC
RMIC
V
B
V
D
DGND
AGND
V
A
VREFI
VCM
X1I
X1O
X2I
X2O
SPM
SIGNAL SUMMARY
SIGNAL NAME
TYPE
FUNCTION
D+
I/O
USB data – non–inverted signal of differential data pair.
D–
I/O
USB data – inverted signal of differential data pair.
SPM
I
Suspend Power Mode – controls device power configuration when a USB suspend
state is entered.
SUSO
O
Suspend Output – buffered USB suspend state output from USB device core. When
HIGH the USB is in an active non–suspended state, when LOW the USB has entered
a suspended state. This is an open drain output and requires a pull–up.
RMIC
I
Microphone right channel analog input to the analog output mixer.
LMIC
I
Microphone left channel analog input to the analog output mixer.
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