参数资料
| 型号： | PCM1792DBRG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 47/61页 |
| 文件大小： | 0K |
| 描述： | IC DAC 24BIT STER 192KHZ 28-SSOP |
| 产品培训模块： | Data Converter Basics |
| 标准包装： | 2,000 |
| 位数： | 24 |
| 数据接口： | I²C，串行，SPI? |
| 转换器数目： | 2 |
| 电压电源： | 模拟和数字 |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 2 电压，单极 |
| 采样率（每秒）： | 200k |
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PCM1792
SLES069B MARCH 2003 REVISED NOVEMBER 2006
www.ti.com
51
Audio Fields
The audio field is 32 bits in length and the audio data is transferred MSB first, so the other fields must be stuffed with
0s as shown in the following example.
31
16
12
8
7
4 3
0
audio data
MSB
24 bits
LSB
All 0s
TDMCA Register Requirements
TDMCA mode requires device ID and audio channel information, previously described. The OPE bit in register 19
indicates audio channel availability and register 23 indicates the device ID. Register 23 is used only in the TDMCA
mode. See the mode control register map (Table 4).
Register Write/Read Operation
The command supports register write and read operations. If the command requests to read one register, the read
data is transferred on DO during the data phase of the timing cycle. The DI signal can be retrieved at the positive
edge of BCK, and the DO signal is driven at the negative edge of BCK. DO is activated one BCK cycle early to
compensate for the output delay caused by high impedance. Figure 60 shows the TDMCA write and read timing.
BCK
DI
DO
DOEN
(Internal)
1 BCK Early
Read Mode and Proper Register ID
Write Data Retrieved, if Write Mode
Read Data Driven, if Read Mode
Register ID Phase
Data Phase
Figure 60. TDMCA Write and Read Operation Timing
TDMCA-Mode Operation
DCO specifies the owner of the next audio channel in TDMCA-mode operation. When a device retrieves its own audio
channel data, DCO goes HIGH during the last audio channel period. Figure 61 shows the DCO output timing in
TDMCA-mode operation. The host controller ignores the behavior of DCI and DCO. DCO indicates the last audio
channel of each device. Therefore, DCI means the next audio channel is allocated.
If some devices are skipped due to no active audio channel, the skipped devices must notify the next device that the
DCO will be passed through the next DCI. Figure 62 and Figure 63 show DCO timing with skip operation. Figure 64
shows the ac timing of the daisy chain signals.
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| PCM1793 | 制造商:TI 制造商全称:Texas Instruments 功能描述:24 BIT 192KHZ SAMPLING ADVANCED SEGMENT AUDIO STEREO DIGITAL TO ANALOG CONVERTER |
| PCM1793DB | 功能描述:音频数/模转换器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量: 分辨率:16 bit 接口类型:I2S, UBS 转换速率: 信噪比:98 dB 工作电源电压:5 V DAC 输出端数量:2 工作温度范围:- 25 C to + 85 C 电源电流:23 mA 安装风格:SMD/SMT 封装 / 箱体:TQFP-32 封装:Reel |
| PCM1793DB | 制造商:Texas Instruments 功能描述:D/A CONVERTER (D-A) IC |
| PCM1793DBG4 | 功能描述:音频数/模转换器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量: 分辨率:16 bit 接口类型:I2S, UBS 转换速率: 信噪比:98 dB 工作电源电压:5 V DAC 输出端数量:2 工作温度范围:- 25 C to + 85 C 电源电流:23 mA 安装风格:SMD/SMT 封装 / 箱体:TQFP-32 封装:Reel |
| PCM1793DBR | 功能描述:音频数/模转换器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 转换器数量: 分辨率:16 bit 接口类型:I2S, UBS 转换速率: 信噪比:98 dB 工作电源电压:5 V DAC 输出端数量:2 工作温度范围:- 25 C to + 85 C 电源电流:23 mA 安装风格:SMD/SMT 封装 / 箱体:TQFP-32 封装:Reel |
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