參數(shù)資料
型號: DSD1792DBRG4
廠商: Texas Instruments
文件頁數(shù): 36/57頁
文件大?。?/td> 0K
描述: IC DAC 24BIT SER 28-SSOP
產品培訓模塊: Data Converter Basics
標準包裝: 2,000
位數(shù): 24
數(shù)據接口: 串行
轉換器數(shù)目: 2
電壓電源: 模擬和數(shù)字
功率耗散(最大): 335mW
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(shù)目和類型: 4 電流,單極
采樣率(每秒): 200k
DSD1792
SLES067B MARCH 2003 REVISED NOVEMBER 2006
www.ti.com
41
DSD MODE CONFIGURATION AND FUNCTION CONTROLS
Configuration for the DSD Interface Mode
DSD = 1 (Register 20, B5)
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 16
R/W
0
1
0
Register 17
R/W
0
1
0
1
Register 18
R/W
0
1
0
1
0
DMF1
DMF0
Register 19
R/W
0
1
0
1
REV
OPE
Register 20
R/W
0
1
0
1
0
SRST
1
MONO
CHSL
OS1
OS0
Register 21
R
0
1
0
1
0
1
DZ1
DZ0
Register 22
R
0
1
0
1
0
ZFGR
ZFGL
NOTE:
–: Function is disabled. No operation even if data bit is set
DMF[1:0]: Analog FIR Performance Selection
Default value: 00
DMF[1:0]
Analog-FIR Performance Select
00
FIR-1 (default)
01
FIR-2
10
FIR-3
11
FIR-4
Plots for the four analog FIR filter responses are shown in the TYPICAL PERFORMANCE CURVES section
of this data sheet.
OS[1:0]: Analog-FIR Operation-Speed Selection
Default value: 00
OS[1:0]
Operation Speed Select
00
fDBCK (default)
01
fDBCK/2
10
Reserved
11
fDBCK/4
The OS bit in the DSD mode is used to select the operating rate of the analog FIR. The OS bits must be set
before setting the DSD bit to 1.
Requirements for System Clock
The bit clock (BCK) for the DSD mode is required at pin 3 of the DSD1792. The frequency of the bit clock can
be N times the sampling frequency. Generally, N is 64 in DSD applications.
The interface timing between the bit clock and DATAL and DATAR is required to meet the same setup- and
hold-time specifications as shown for the audio interface timing in Figure 42.
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