Changes in 72f0ef1: bk

				Chip-cn-dat/Beken-dat/BK3266-dat/BK3266-dat.md
			
          @@ -1,3 +1,32 @@

           # BK3266-dat

          +## Overview

          +

          +BK3266 is a low-power, highly integrated Bluetooth audio SoC. It integrates a high-performance Bluetooth RF transceiver, a feature-rich baseband processor, a Flash controller, multiple analog and digital peripherals, and a Bluetooth software stack including audio, voice, and SPP profiles.

          +

          +## Features

          +

          +1. Operating voltage 2.8 V ~ 4.2 V

          +2. A2DP average current is 9 mA

          +3. 500 ms sniff current is 300 uA

          +5. 0.8 uA deep sleep current

          +6. Bluetooth 5.0 Classic Low Power

          +7. A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, SPP v1.2

          +8. True wireless stereo and two active connections

          +9. Two-wire UART download interface

          +10. 16-bit stereo ADC and DAC

          +11. Stereo line and dual microphones

          +12. Five-band digital hardware equalizer

          +13. SPI, UART, I2C, SDIO and USB

          +14. I2S master and slave interface with MCLK output

          +15. External PA and LNA interface

          +16. Up to 220mA battery charge controller

          +

          +

          +

          +## ref 

          +

          +- https://www.bekencorp.com/index/goods/detail/cid/27.html

          +

          +

				Tech-dat/Network-dat/Bluetooth-dat/bt-audio-dat/bt-audio-dat.md
			
          @@ -18,21 +18,21 @@

           ## chip compare 

          -| Chip Model       | Manufacturer                 | Ver. | aptX          | Codec                | Power Efficiency | Lifetime Status | Notable Features                               | Ideal Use Case               |

          -| ---------------- | ---------------------------- | ---- | ------------- | -------------------- | ---------------- | --------------- | ---------------------------------------------- | ---------------------------- |

          -| CSR64215         | [[Qualcomm-dat]]                     | 4.2  | Yes           | SBC, AAC, aptX       | High             | EOL             | Low power, high-quality audio                  | Wireless audio devices       |

          -| QCC3031          | [[Qualcomm-dat]]                     | 5.0  | Yes (aptX HD) | SBC, AAC, aptX HD    | High             | Active          | Advanced Bluetooth audio, low-power design     | Bluetooth audio products     |

          -| QCC5181          | [[Qualcomm-dat]]                     | 5.2  | Yes (aptX HD) | SBC, AAC, aptX HD, LE Audio | Very High        | Active          | TrueWireless Mirroring, LE Audio support       | Modern Bluetooth headphones  |

          -| CSR8675          | [[Qualcomm-dat]]                     | 4.2  | Yes (aptX HD) | SBC, AAC, aptX HD    | Moderate         | Active          | aptX HD, premium audio features                | High-end headphones/speakers |

          -| CSR8645          | [[Qualcomm-dat]]                     | 4.0  | Yes           | SBC, AAC, aptX       | Moderate         | EOL             | Mid-range audio support                        | Affordable audio devices     |

          -| CSR8635          | [[Qualcomm-dat]]                     | 4.0  | Yes           | SBC, AAC, aptX       | Moderate         | EOL             | Budget-friendly with aptX                      | Low-cost audio solutions     |

          -| QCC3003/QCC3008  | [[Qualcomm-dat]]                     | 5.0  | Yes           | SBC, AAC, aptX, TWS+ | Very High        | Active          | TrueWireless Stereo, low power                 | Modern Bluetooth audio       |

          -| nRF52832         | [[Nordic-dat]]         | 5.0  | No            | SBC                  | High             | Active          | Low-energy profile, flexible for IoT and audio | IoT and general Bluetooth    |

          -| CC2564C          | [[TI-bt-audio-dat]]           | 4.1  | No            | SBC                  | Moderate         | Active          | Dual-mode (Classic + Low Energy)               | IoT and audio solutions      |

          -| ATS2825          | Actions Semi                 | 5.0  | No            | SBC                  | High             | Active          | Cost-effective, supports basic audio           | Budget Bluetooth devices     |

          -| RTL8763B         | [[Realtek-dat]]                      | 5.0  | No            | SBC, AAC             | High             | Active          | Low latency, reliable for TWS earbuds          | True Wireless Earbuds        |

          -| [[BK8000-dat]] | [[beken-dat]] | 

          -| [[BK3266-dat]] | [[beken-dat]] | 

          +| Chip Model      | Manufacturer        | Ver. | aptX          | Codec                       | Power Efficiency | Lifetime Status | Notable Features                               | Ideal Use Case               |

          +| --------------- | ------------------- | ---- | ------------- | --------------------------- | ---------------- | --------------- | ---------------------------------------------- | ---------------------------- |

          +| CSR64215        | [[Qualcomm-dat]]    | 4.2  | Yes           | SBC, AAC, aptX              | High             | EOL             | Low power, high-quality audio                  | Wireless audio devices       |

          +| QCC3031         | [[Qualcomm-dat]]    | 5.0  | Yes (aptX HD) | SBC, AAC, aptX HD           | High             | Active          | Advanced Bluetooth audio, low-power design     | Bluetooth audio products     |

          +| QCC5181         | [[Qualcomm-dat]]    | 5.2  | Yes (aptX HD) | SBC, AAC, aptX HD, LE Audio | Very High        | Active          | TrueWireless Mirroring, LE Audio support       | Modern Bluetooth headphones  |

          +| CSR8675         | [[Qualcomm-dat]]    | 4.2  | Yes (aptX HD) | SBC, AAC, aptX HD           | Moderate         | Active          | aptX HD, premium audio features                | High-end headphones/speakers |

          +| CSR8645         | [[Qualcomm-dat]]    | 4.0  | Yes           | SBC, AAC, aptX              | Moderate         | EOL             | Mid-range audio support                        | Affordable audio devices     |

          +| CSR8635         | [[Qualcomm-dat]]    | 4.0  | Yes           | SBC, AAC, aptX              | Moderate         | EOL             | Budget-friendly with aptX                      | Low-cost audio solutions     |

          +| QCC3003/QCC3008 | [[Qualcomm-dat]]    | 5.0  | Yes           | SBC, AAC, aptX, TWS+        | Very High        | Active          | TrueWireless Stereo, low power                 | Modern Bluetooth audio       |

          +| nRF52832        | [[Nordic-dat]]      | 5.0  | No            | SBC                         | High             | Active          | Low-energy profile, flexible for IoT and audio | IoT and general Bluetooth    |

          +| CC2564C         | [[TI-bt-audio-dat]] | 4.1  | No            | SBC                         | Moderate         | Active          | Dual-mode (Classic + Low Energy)               | IoT and audio solutions      |

          +| ATS2825         | Actions Semi        | 5.0  | No            | SBC                         | High             | Active          | Cost-effective, supports basic audio           | Budget Bluetooth devices     |

          +| RTL8763B        | [[Realtek-dat]]     | 5.0  | No            | SBC, AAC                    | High             | Active          | Low latency, reliable for TWS earbuds          | True Wireless Earbuds        |

          +| [[BK8000-dat]]  | [[beken-dat]]       |

          +| [[BK3266-dat]]  | [[beken-dat]]       | 5.0  |

           ## chip solutions 

          @@ -40,6 +40,14 @@

           - [[Beken-dat]] - [[qualcomm-dat]] - [[Nordic-dat]] - [[TI-bt-audio-dat]] - [[Realtek-dat]] - [[Actions-Semi-dat]]

          +## bluetooth 5.0 

          +

          +Bluetooth 5.0 does support longer range but with a 10 meters range this solution clearly does not take advantage of this new feature. Bluetooth 5 announcement did not include any specific about audio improvement, So I had a look at a Bluetooth 5 paper, and audio is mentioned three times:

          +

          +- Bluetooth 5 introduces the ability to perform periodic data to be broadcast, it’s possible to chain packets and deterministic advertising, which allows scanners together and for each packet to contain a different to synchronicity their scanning for packets with the subset of the whole data set. Schedule of the advertising device. This can be a more power-efficient way to perform scanning and is also likely to pave the way for new uses of Bluetooth LE in connection-less scenarios, such as audio applications

          +- The Bluetooth 4 channel selection algorithm used in frequency hopping produced only 12 distinct sequences of channels and all packets in a given connection event would use the same channel, which is not optimal for some applications, such as audio. Bluetooth 5 introduced a new channel selection algorithm called channel selection algorithm #2. Hopping sequences are now pseudo random and the distinct sequences which are possible are very large.

          +- Bluetooth’s advertising extensions feature will pave the way for next-generation beacons, advanced audio applications and more.

          +

           ## ref

...	...	@@ -1,3 +1,32 @@
1	1
2	2	# BK3266-dat
3	3
	4	+## Overview
	5	+
	6	+BK3266 is a low-power, highly integrated Bluetooth audio SoC. It integrates a high-performance Bluetooth RF transceiver, a feature-rich baseband processor, a Flash controller, multiple analog and digital peripherals, and a Bluetooth software stack including audio, voice, and SPP profiles.
	7	+
	8	+## Features
	9	+
	10	+1. Operating voltage 2.8 V ~ 4.2 V
	11	+2. A2DP average current is 9 mA
	12	+3. 500 ms sniff current is 300 uA
	13	+5. 0.8 uA deep sleep current
	14	+6. Bluetooth 5.0 Classic Low Power
	15	+7. A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, SPP v1.2
	16	+8. True wireless stereo and two active connections
	17	+9. Two-wire UART download interface
	18	+10. 16-bit stereo ADC and DAC
	19	+11. Stereo line and dual microphones
	20	+12. Five-band digital hardware equalizer
	21	+13. SPI, UART, I2C, SDIO and USB
	22	+14. I2S master and slave interface with MCLK output
	23	+15. External PA and LNA interface
	24	+16. Up to 220mA battery charge controller
	25	+
	26	+
	27	+
	28	+## ref
	29	+
	30	+- https://www.bekencorp.com/index/goods/detail/cid/27.html
	31	+
	32	+

...	...	@@ -18,21 +18,21 @@
18	18
19	19	## chip compare
20	20
21		-\| Chip Model \| Manufacturer \| Ver. \| aptX \| Codec \| Power Efficiency \| Lifetime Status \| Notable Features \| Ideal Use Case \|
22		-\| ---------------- \| ---------------------------- \| ---- \| ------------- \| -------------------- \| ---------------- \| --------------- \| ---------------------------------------------- \| ---------------------------- \|
23		-\| CSR64215 \| [[Qualcomm-dat]] \| 4.2 \| Yes \| SBC, AAC, aptX \| High \| EOL \| Low power, high-quality audio \| Wireless audio devices \|
24		-\| QCC3031 \| [[Qualcomm-dat]] \| 5.0 \| Yes (aptX HD) \| SBC, AAC, aptX HD \| High \| Active \| Advanced Bluetooth audio, low-power design \| Bluetooth audio products \|
25		-\| QCC5181 \| [[Qualcomm-dat]] \| 5.2 \| Yes (aptX HD) \| SBC, AAC, aptX HD, LE Audio \| Very High \| Active \| TrueWireless Mirroring, LE Audio support \| Modern Bluetooth headphones \|
26		-\| CSR8675 \| [[Qualcomm-dat]] \| 4.2 \| Yes (aptX HD) \| SBC, AAC, aptX HD \| Moderate \| Active \| aptX HD, premium audio features \| High-end headphones/speakers \|
27		-\| CSR8645 \| [[Qualcomm-dat]] \| 4.0 \| Yes \| SBC, AAC, aptX \| Moderate \| EOL \| Mid-range audio support \| Affordable audio devices \|
28		-\| CSR8635 \| [[Qualcomm-dat]] \| 4.0 \| Yes \| SBC, AAC, aptX \| Moderate \| EOL \| Budget-friendly with aptX \| Low-cost audio solutions \|
29		-\| QCC3003/QCC3008 \| [[Qualcomm-dat]] \| 5.0 \| Yes \| SBC, AAC, aptX, TWS+ \| Very High \| Active \| TrueWireless Stereo, low power \| Modern Bluetooth audio \|
30		-\| nRF52832 \| [[Nordic-dat]] \| 5.0 \| No \| SBC \| High \| Active \| Low-energy profile, flexible for IoT and audio \| IoT and general Bluetooth \|
31		-\| CC2564C \| [[TI-bt-audio-dat]] \| 4.1 \| No \| SBC \| Moderate \| Active \| Dual-mode (Classic + Low Energy) \| IoT and audio solutions \|
32		-\| ATS2825 \| Actions Semi \| 5.0 \| No \| SBC \| High \| Active \| Cost-effective, supports basic audio \| Budget Bluetooth devices \|
33		-\| RTL8763B \| [[Realtek-dat]] \| 5.0 \| No \| SBC, AAC \| High \| Active \| Low latency, reliable for TWS earbuds \| True Wireless Earbuds \|
34		-\| [[BK8000-dat]] \| [[beken-dat]] \|
35		-\| [[BK3266-dat]] \| [[beken-dat]] \|
	21	+\| Chip Model \| Manufacturer \| Ver. \| aptX \| Codec \| Power Efficiency \| Lifetime Status \| Notable Features \| Ideal Use Case \|
	22	+\| --------------- \| ------------------- \| ---- \| ------------- \| --------------------------- \| ---------------- \| --------------- \| ---------------------------------------------- \| ---------------------------- \|
	23	+\| CSR64215 \| [[Qualcomm-dat]] \| 4.2 \| Yes \| SBC, AAC, aptX \| High \| EOL \| Low power, high-quality audio \| Wireless audio devices \|
	24	+\| QCC3031 \| [[Qualcomm-dat]] \| 5.0 \| Yes (aptX HD) \| SBC, AAC, aptX HD \| High \| Active \| Advanced Bluetooth audio, low-power design \| Bluetooth audio products \|
	25	+\| QCC5181 \| [[Qualcomm-dat]] \| 5.2 \| Yes (aptX HD) \| SBC, AAC, aptX HD, LE Audio \| Very High \| Active \| TrueWireless Mirroring, LE Audio support \| Modern Bluetooth headphones \|
	26	+\| CSR8675 \| [[Qualcomm-dat]] \| 4.2 \| Yes (aptX HD) \| SBC, AAC, aptX HD \| Moderate \| Active \| aptX HD, premium audio features \| High-end headphones/speakers \|
	27	+\| CSR8645 \| [[Qualcomm-dat]] \| 4.0 \| Yes \| SBC, AAC, aptX \| Moderate \| EOL \| Mid-range audio support \| Affordable audio devices \|
	28	+\| CSR8635 \| [[Qualcomm-dat]] \| 4.0 \| Yes \| SBC, AAC, aptX \| Moderate \| EOL \| Budget-friendly with aptX \| Low-cost audio solutions \|
	29	+\| QCC3003/QCC3008 \| [[Qualcomm-dat]] \| 5.0 \| Yes \| SBC, AAC, aptX, TWS+ \| Very High \| Active \| TrueWireless Stereo, low power \| Modern Bluetooth audio \|
	30	+\| nRF52832 \| [[Nordic-dat]] \| 5.0 \| No \| SBC \| High \| Active \| Low-energy profile, flexible for IoT and audio \| IoT and general Bluetooth \|
	31	+\| CC2564C \| [[TI-bt-audio-dat]] \| 4.1 \| No \| SBC \| Moderate \| Active \| Dual-mode (Classic + Low Energy) \| IoT and audio solutions \|
	32	+\| ATS2825 \| Actions Semi \| 5.0 \| No \| SBC \| High \| Active \| Cost-effective, supports basic audio \| Budget Bluetooth devices \|
	33	+\| RTL8763B \| [[Realtek-dat]] \| 5.0 \| No \| SBC, AAC \| High \| Active \| Low latency, reliable for TWS earbuds \| True Wireless Earbuds \|
	34	+\| [[BK8000-dat]] \| [[beken-dat]] \|
	35	+\| [[BK3266-dat]] \| [[beken-dat]] \| 5.0 \|
36	36
37	37
38	38	## chip solutions
...	...	@@ -40,6 +40,14 @@
40	40	- [[Beken-dat]] - [[qualcomm-dat]] - [[Nordic-dat]] - [[TI-bt-audio-dat]] - [[Realtek-dat]] - [[Actions-Semi-dat]]
41	41
42	42
	43	+## bluetooth 5.0
	44	+
	45	+Bluetooth 5.0 does support longer range but with a 10 meters range this solution clearly does not take advantage of this new feature. Bluetooth 5 announcement did not include any specific about audio improvement, So I had a look at a Bluetooth 5 paper, and audio is mentioned three times:
	46	+
	47	+- Bluetooth 5 introduces the ability to perform periodic data to be broadcast, it’s possible to chain packets and deterministic advertising, which allows scanners together and for each packet to contain a different to synchronicity their scanning for packets with the subset of the whole data set. Schedule of the advertising device. This can be a more power-efficient way to perform scanning and is also likely to pave the way for new uses of Bluetooth LE in connection-less scenarios, such as audio applications
	48	+- The Bluetooth 4 channel selection algorithm used in frequency hopping produced only 12 distinct sequences of channels and all packets in a given connection event would use the same channel, which is not optimal for some applications, such as audio. Bluetooth 5 introduced a new channel selection algorithm called channel selection algorithm #2. Hopping sequences are now pseudo random and the distinct sequences which are possible are very large.
	49	+- Bluetooth’s advertising extensions feature will pave the way for next-generation beacons, advanced audio applications and more.
	50	+
43	51
44	52
45	53	## ref