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参数资料
| 型号： | UDA1334BTS/N2,112 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | DAC |
| 英文描述： | Low power audio DAC; Package: SOT369-1 (SSOP16); Container: Tube |
| 中文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PDSO16 |
| 封装： | 4.40 MM, PLASTIC, MO-152, SOT369-1, SSOP-16 |
| 文件页数： | 22/22页 |
| 文件大小： | 160K |
| 代理商： | UDA1334BTS/N2,112 |
2000 Jul 31
9
NXP Semiconductors
Product specification
Low power audio DAC
UDA1334BTS
8.6
Feature settings
The features of the UDA1334BTS can be set by control
pins SFOR1, SFOR0, MUTE, DEEM and PCS.
8.6.1
DIGITAL INTERFACE FORMAT SELECT
The digital audio interface formats (see Fig.5) can be
selected via the pins SFOR1 and SFOR0 as shown in
Table 4.
Table 4
Data format selection
8.6.2
MUTE CONTROL
The output signal can be soft muted by setting pin MUTE
to HIGH level as shown in Table 5.
Table 5
Mute control
8.6.3
DE-EMPHASIS CONTROL
De-emphasis can be switched on for fs = 44.1 kHz by
setting pin DEEM at HIGH level. The function description
of pin DEEM is given in Table 6.
Table 6
De-emphasis control
Remark: the de-emphasis function in only supported in the
normal operating mode, not in the low sampling frequency
mode.
8.6.4
POWER CONTROL AND SAMPLING FREQUENCY
SELECT
Pin PCS is a 3-level pin and is used to set the mode of the
UDA1334BTS. The definition is given in Table 7.
Table 7
PCS function definition
The low sampling frequency mode is required to have a
higher oversampling rate in the noise shaper in order to
improve the signal-to-noise ratio. In this mode the
oversampling ratio of the noise shaper will be 128fs instead
of 64fs.
SFOR1
SFOR0
INPUT FORMAT
LOW
I2S-bus input
LOW
HIGH
LSB-justified 16 bits input
HIGH
LOW
LSB-justified 20 bits input
HIGH
LSB-justified 24 bits input
MUTE
FUNCTION
LOW
mute off
HIGH
mute on
DEEM
FUNCTION
LOW
de-emphasis off
HIGH
de-emphasis on
PCS
FUNCTION
LOW
normal operating mode
MID
low sampling frequency mode
HIGH
Power-down or Sleep mode
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