CYW4343X
Contents
1. Overview............................................................ 7
1.1 Overview ............................................................. 7
1.2 Features .............................................................. 9
1.3 Standards Compliance ........................................ 9
7. Bluetooth + FM Subsystem Overview........... 40
7.1 Features .............................................................40
7.2 Bluetooth Radio ..................................................41
7.2.1 Transmit ..................................................41
7.2.2 Digital Modulator .....................................41
7.2.3 Digital Demodulator and Bit
2. Power Supplies and Power Management..... 11
2.1 Power Supply Topology .................................... 11
2.2 CYW4343X PMU Features ............................... 11
2.3 WLAN Power Management ............................... 18
2.4 PMU Sequencing .............................................. 18
2.5 Power-Off Shutdown ......................................... 19
2.6 Power-Up/Power-Down/Reset Circuits ............. 19
2.7 Wireless Charging ............................................. 19
Synchronizer ...........................................41
7.2.4 Power Amplifier ......................................42
7.2.5 Receiver .................................................42
7.2.6 Digital Demodulator and Bit
Synchronizer ...........................................42
7.2.7 Receiver Signal Strength Indicator .........42
7.2.8 Local Oscillator Generation ....................42
7.2.9 Calibration ..............................................42
8. Bluetooth Baseband Core.............................. 43
8.1 Bluetooth 4.1 Features .......................................43
8.2 Link Control Layer ..............................................43
8.3 Test Mode Support .............................................43
3. Frequency References ................................... 22
3.1 Crystal Interface and Clock Generation ............ 22
3.2 TCXO ................................................................ 22
3.3 External 32.768 kHz Low-Power Oscillator ....... 23
8.4 Bluetooth Power Management Unit ...................44
8.4.1 RF Power Management ..........................44
8.4.2 Host Controller Power Management ......44
4. WLAN System Interfaces ............................... 25
4.1 SDIO v2.0 .......................................................... 25
4.1.1 SDIO Pin Descriptions ........................... 25
8.5 BBC Power Management ...................................45
8.5.1 FM Power Management .........................46
8.5.2 Wideband Speech ..................................46
4.2 Generic SPI Mode ............................................. 26
4.3 SPI Protocol ...................................................... 27
4.3.1 Command Structure .............................. 28
4.3.1.1.Write ......................................................... 29
4.3.1.2.Write/Read ............................................... 29
4.3.1.3.Read ........................................................ 29
4.3.2 Status .................................................... 29
8.6 Packet Loss Concealment .................................46
8.6.1 Codec Encoding .....................................47
8.6.2 Multiple Simultaneous A2DP
Audio Streams ........................................47
8.6.3 FM Over Bluetooth .................................47
8.7 Adaptive Frequency Hopping .............................47
8.8 Advanced Bluetooth/WLAN Coexistence ...........47
4.4 gSPI Host-Device Handshake ........................... 31
4.4.1 Boot-Up Sequence ................................ 32
8.9 Fast Connection (Interlaced Page and
5. Wireless LAN MAC and PHY.......................... 35
Inquiry Scans) ....................................................47
5.1 MAC Features ................................................... 35
5.1.1 MAC Description .................................... 35
5.1.1.1.PSM ......................................................... 36
5.1.1.2.WEP ......................................................... 36
5.1.1.3.TXE .......................................................... 36
5.1.1.4.RXE .......................................................... 36
5.1.1.5.IFS ........................................................... 37
5.1.1.6.TSF .......................................................... 37
5.1.1.7.NAV .......................................................... 37
5.1.1.8.MAC-PHY Interface ................................. 37
9. Microprocessor and Memory Unit for Bluetooth
48
9.1 RAM, ROM, and Patch Memory .........................48
9.2 Reset ..................................................................48
10.Bluetooth Peripheral Transport Unit............. 48
10.1 PCM Interface ....................................................48
10.1.1 Slot Mapping ...........................................48
10.1.2 Frame Synchronization ...........................48
10.1.3 Data Formatting ......................................48
10.1.4 Wideband Speech Support .....................49
10.1.5 Multiplexed Bluetooth and FM
5.2 PHY Description ................................................ 37
5.2.1 PHY Features ........................................ 37
6. WLAN Radio Subsystem................................ 39
6.1 Receive Path ..................................................... 39
6.2 Transmit Path .................................................... 40
6.3 Calibration ......................................................... 40
over PCM ................................................49
10.1.6 PCM Interface Timing .............................50
10.1.6.1.Short Frame Sync, Master Mode ............50
10.1.6.2.Short Frame Sync, Slave Mode ..............51
10.1.6.3.Long Frame Sync, Master Mode .............52
Document No. 002-14797 Rev. *H
Page 5 of 128
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