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參數(shù)資料
| 型號： | AD1954YSTZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 13/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC AUDIO 3CHAN 26BIT 48LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 1 |
| 系列： | SigmaDSP® |
| 位數(shù)： | 26 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 3 |
| 電壓電源： | 模擬和數(shù)字 |
| 功率耗散（最大）： | 510mW |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 托盤 |
| 輸出數(shù)目和類型： | 6 電壓，單極 |
| 采樣率（每秒）： | 48k |
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AD1954
–20–
Table II. SPI Port Address Decoding
SPI Address
Register Name
Read/Write Word Length
0–255
Parameter RAM
Write: 22 Bits
Read: 22 Bits
256
SPI Control Register 1
Write: 11 Bits
Read: 2 Bits
257
SPI Control Register 2
Write: 9 Bits
Read: N/A
258
Volume Left
Write: 22 Bits
Read: N/A
259
Volume Right
Write: 22 Bits
Read: N/A
260
Volume Sub
Write: 22 Bits
Read: N/A
261
Data Capture (SPI Out) #1
Write: 9-Bit Program Counter Value, 2-Bit Register Address
Read: 24 Bits
262
Data Capture (SPI Out) #2
Write: 9-Bit Program Counter Value, 2-Bit Register Address
Read: 24 Bits
263
Data Capture (Serial Out) Left
Write: 9-Bit Program Counter Value, 2-Bit Register Address
Read: N/A
264
Data Capture (Serial Out) Right
Write: 9-Bit Program Counter Value, 2-Bit Register Address
Read: N/A
265
Parameter RAM Safe Load Register 0
Write: 8-Bit Parameter RAM Address, 22-Bit Parameter Data
Read: N/A
266
Parameter RAM Safe Load Register 1
Write: 8-Bit Parameter RAM Address, 22-Bit Parameter Data
Read: N/A
267
Parameter RAM Safe Load Register 2
Write: 8-Bit Parameter RAM Address, 22-Bit Parameter Data
Read: N/A
268
Parameter RAM Safe Load Register 3
Write: 8-Bit Parameter RAM Address, 22-Bit Parameter Data
Read: N/A
269
Parameter RAM Safe Load Register 4
Write: 8-Bit Parameter RAM Address, 22-Bit Parameter Data
Read: N/A
270–510
Unused
511
Test Register
Write: 8 Bits
Read: N/A
512–1024
Program RAM
Write: 35 Bits
Read: 35 Bits
SPI Address Decoding
Table II shows the address decoding used in the SPI port.The
SPI address space encompasses a set a registers and two RAMs,
one for holding signal processing parameters and one for hold-
ing the program instructions. Both of the RAMs are loaded on
power-up from on-board boot ROMs.
Control Register 1
Control Register 1 is an 11-bit register that controls data capture,
serial modes, de-emphasis, mute, power-down, and SPI-to-
memory transfers.Table III documents the contents of this register.
Table IV details the two bits in the register’s read operation.
Bits 1:0 set the word length, which is used in right-justified serial
modes to determine where the MSB is located relative to the start
of the audio frame.
Bits 3:2 select one of four serial modes, which are discussed in
the Serial Data Input Port section.
The de-emphasis curve selection Bits 5:4 turn on the internal
de-emphasis filter for one of three possible sample rates.
Bit 6, the soft power-down bit, stops the internal clocks to the DSP
core, but does not reset the part.The digital power consumption
is reduced to a low level when this bit is asserted. Reset can only
be asserted using the external reset pin.
Soft mute (Bit 7) is used to initiate a volume ramp-down sequence.
If the initial volume was set to 1.0, this operation will take 512
audio frames to complete.When this bit is de-asserted, a ramp-up
sequence is initiated until the volume returns to its original setting.
When set, Bit 8 enables the DCSOUT pin.This must be set in
order to read from the data capture serial out registers.
REV. A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| AD1954YSTZRL | 功能描述:IC DAC AUDIO 3CHAN 26BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:SigmaDSP® 標準包裝:47 系列:- 設(shè)置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD1954YSZ | 制造商:Analog Devices 功能描述:DAC 3-CH Delta-Sigma 24-bit 44-Pin MQFP |
| AD1955 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Performance Multibit DAC with SACD Playback |
| AD1955ARS | 制造商:Rochester Electronics LLC 功能描述:24 BIT 192KHZ DAC 123 DB DNR WITH SACD - Bulk 制造商:Analog Devices 功能描述:IC DAC 24-BIT |
| AD1955ARSRL | 制造商:Analog Devices 功能描述:DAC 2-CH Delta-Sigma 24-bit 28-Pin SSOP T/R 制造商:Rochester Electronics LLC 功能描述:24 BIT 192KHZ DAC 123 DB DNR WITH SACD - Bulk |
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