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CS43198 датащи(PDF) 32 Page - Cirrus Logic

номер детали CS43198
подробное описание детали  130-dB, 32-Bit High-Performance DAC with Pseudodifferential Outputs
PDF  137 Pages
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производитель  CIRRUS [Cirrus Logic]
домашняя страница  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS43198 датащи(HTML) 32 Page - Cirrus Logic

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DS1156F1
CS43198
4.4 Headphone Presence Detect
• To avoid possible damage, VCP_FILT± pins must remain within the absolute maximum rating specified.
Figure 4-6. External VCP_FILT Power-Up Sequence
For powering up CS43198 in this mode, the recommended sequence must be followed. This assumes that the CS43198
starts from the status where VCP_FILT± pins are presented with Hi-Z.
1. Set EXT_VCPFILT and HV_EN bits.
2. Wait 8 ms after I2C ACK.
3. Release and start to ramp external voltage on VCP_FILT± pins.
4. Wait until VCP_FILT+ pin voltage to be greater than +2.6V and VCP_FILT– to be less than –2.6 V.
5. Clear the PDN_HP bit.
Figure 4-7. External VCP_FILT Power-Down Sequence
For powering down in this mode, use the following recommended sequence. This assumes that the CS43198 starts from
the status where VCP_FILT± pins are presented with ±3.0 V, respectively.
1. Set PDN_HP.
2. Wait 8 ms after I2C ACK.
3. Start to shut-off external supply to VCP_FILT± pins.
4. Wait until Hi-Z mode is presented on VCP_FILT± pins.
5. Clear EXT_VCPFILT and HV_EN bits.
4.4 Headphone Presence Detect
The CS43198 provides headphone presence-detect functionality.
EXT_VCPFILT
PDN_HP
VCP_FILT+
VCP_FILT‐
8 ms
+3.0 V
‐3.0 V
+2.6 V
‐2.6 V
Hi‐Z
Hi‐Z
EXT_VCPFILT
PDN_HP
VCP_FILT+
VCP_FILT‐
8 ms
+3.0 V
‐3.0 V
Hi‐Z
Hi‐Z



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