參數資料
型號: PCM1792DBR
廠商: Texas Instruments
文件頁數: 26/61頁
文件大小: 0K
描述: IC DAC 24BIT STER 192KHZ 28-SSOP
產品培訓模塊: Data Converter Basics
標準包裝: 2,000
位數: 24
數據接口: I²C,串行,SPI?
轉換器數目: 2
電壓電源: 模擬和數字
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
供應商設備封裝: 28-SSOP
包裝: 帶卷 (TR)
輸出數目和類型: 2 電壓,單極
采樣率(每秒): 200k
PCM1792
SLES069B MARCH 2003 REVISED NOVEMBER 2006
www.ti.com
32
OS[1:0]: Delta-Sigma Oversampling Rate Selection
These bits are available for read and write.
Default value: 00
OS[1:0]
Operation Speed Select
00
64 times fS (default)
01
32 times fS
10
128 times fS
11
Reserved
The OS bits are used to change the oversampling rate of delta-sigma modulation. Use of this function enables the
designer to stabilize the conditions at the post low-pass filter for different sampling rates. As an application example,
programming to set 128 times in 44.1-kHz operation, 64 times in 96-kHz operation, and 32 times in 192-kHz operation
allows the use of only a single type (cutoff frequency) of post low-pass filter. The 128 fS oversampling rate is not
available at sampling rates above 100 kHz. If the 128-fS oversampling rate is selected, a system clock of more than
256 fS is required.
In DSD mode, these bits are used to select the speed of the bit clock for DSD data coming into the analog FIR filter.
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 21
R/W
0
1
0
1
0
1
RSV
DZ1
DZ0
PCMZ
R/W: Read/Write Mode Select
When R/W = 0, a write operation is performed.
When R/W = 1, a read operation is performed.
Default value: 0
DZ[1:0]: DSD Zero Output Enable
These bits are available for read and write.
Default value: 00
DZ[1:0]
Zero Output Enable
00
Disabled (default)
01
Even pattern detect
1x
96H pattern detect
The DZ bits are used to enable or disable the output zero flags, and to select the zero pattern in the DSD mode.
PCMZ: PCM Zero Output Enable
These bits are available for read and write.
Default value: 1
PCMZ = 0
PCM zero output disabled
PCMZ = 1
PCM zero output enabled (default)
The PCMZ bit is used to enable or disable the output zero flags in the PCM mode and the external DF mode.
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 22
R
0
1
0
1
0
RSV
ZFGR
ZFGL
R: Read Mode Select
Value is always 1, specifying the readback mode.
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