PRELIMINARY
CYW43438
Contents
1. Overview............................................................ 5
1.1 Overview ............................................................. 5
1.2 Features .............................................................. 6
1.3 Standards Compliance ........................................ 6
9. Microprocessor and Memory Unit
for Bluetooth ................................................... 39
9.1 RAM, ROM, and Patch Memory .........................39
9.2 Reset ..................................................................39
10.Bluetooth Peripheral Transport Unit............. 40
10.1 PCM Interface ....................................................40
10.2 UART Interface ..................................................46
2. Power Supplies and Power Management....... 8
2.1 Power Supply Topology ...................................... 8
2.2 CYW43438 PMU Features .................................. 8
2.3 WLAN Power Management ............................... 11
2.4 PMU Sequencing .............................................. 11
2.5 Power-Off Shutdown ......................................... 12
2.6 Power-Up/Power-Down/Reset Circuits ............. 12
11.FM Receiver Subsystem ................................ 48
11.1 FM Radio ............................................................48
11.2 Digital FM Audio Interfaces ................................48
11.3 Analog FM Audio Interfaces ...............................48
11.4 FM Over Bluetooth .............................................48
11.5 eSCO .................................................................48
11.6 Wideband Speech Link ......................................48
11.7 A2DP ..................................................................48
11.8 Autotune and Search Algorithms .......................48
11.9 Audio Features ...................................................49
11.10RDS/RBDS ........................................................51
3. Frequency References ................................... 13
3.1 Crystal Interface and Clock Generation ............ 13
3.2 TCXO ................................................................ 13
3.3 External 32.768 kHz Low-Power Oscillator ....... 15
4. WLAN System Interfaces ............................... 16
4.1 SDIO v2.0 .......................................................... 16
4.1.1 SDIO Pin Descriptions ........................... 16
4.2 Generic SPI Mode ............................................. 17
12.CPU and Global Functions ............................ 52
12.1 WLAN CPU and Memory Subsystem ................52
12.2 One-Time Programmable Memory .....................52
12.3 GPIO Interface ...................................................52
12.4 External Coexistence Interface ..........................53
12.5 JTAG Interface ...................................................53
12.6 UART Interface ..................................................53
5. Wireless LAN MAC and PHY.......................... 25
5.1 MAC Features ................................................... 25
5.1.1 MAC Description .................................... 25
5.2 PHY Description ................................................ 27
5.2.1 PHY Features ........................................ 28
6. WLAN Radio Subsystem................................ 29
6.1 Receive Path ..................................................... 30
6.2 Transmit Path .................................................... 30
6.3 Calibration ......................................................... 30
13.WLAN Software Architecture......................... 54
13.1 Host Software Architecture ................................54
13.2 Device Software Architecture .............................54
13.2.1 Remote Downloader ...............................54
7. Bluetooth + FM Subsystem Overview........... 31
7.1 Features ............................................................ 31
7.2 Bluetooth Radio ................................................. 32
13.3 Wireless Configuration Utility .............................54
14.Pinout and Signal Descriptions..................... 55
14.1 Ball Map .............................................................55
8. Bluetooth Baseband Core.............................. 34
8.1 Bluetooth 4.1 Features ...................................... 34
8.2 Link Control Layer ............................................. 34
8.3 Test Mode Support ............................................ 35
8.4 Bluetooth Power Management Unit .................. 35
8.5 Adaptive Frequency Hopping ............................ 38
8.6 Advanced Bluetooth/WLAN Coexistence .......... 38
14.2 WLBGA Ball List in Ball Number
Order with X-Y Coordinates ..............................56
14.3 WLBGA Ball List Ordered By Ball Name ............58
14.4 Signal Descriptions ............................................59
14.5 WLAN GPIO Signals and Strapping Options .....62
14.6 Chip Debug Options ...........................................62
14.7 I/O States ...........................................................63
8.7 Fast Connection
15.DC Characteristics.......................................... 65
15.1 Absolute Maximum Ratings ...............................65
15.2 Environmental Ratings .......................................65
(Interlaced Page and Inquiry Scans) ................. 38
Document Number: 002-14796 Rev. *K
Page 3 of 101
CYPRESS [ CYPRESS ]
