RTL8821CU-CG

en t v oc um RTL8821CU-CG en tia lD Single-Chip Chip IEEE 802.11a/b/g/n/ac 1T1R WLAN with Integrated Bluetooth Smart Ready with USB 2.0 IInterface nterface id DATASHEET Co nf (CONFIDENTIAL: Development Partners Only) Re al te k Rev. 0.2r16, May., 2019 Track ID: Realtek Semiconductor Corp. No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan Tel.: +886-3-578-0211. Fax: +886-3-577-6047 www.realtek.com RTL8821CU Datasheet COPYRIGHT ©2019 Realtek Semiconductor Corp. All rights reserved. No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means without the written permission of Realtek Semiconductor Corp. DISCLAIMER oc um en t Realtek provides this document “as is”, without warranty of any kind. Realtek may make improvements hanges in this document or in the product described in this document at any time. This document and/or changes could include technical inaccuracies or typographical errors. TRADEMARKS Realtek is a trademark of Realtek Semiconductor Corporation. Other names mentioned in this document are trademarks/registered trademarks of their respective owners. lD USING THIS DOCUMENT tia This document is intended for the software engineer’s reference and provides detailed programming information. id Summary Preliminary release. Modify general descript description and features Modify general description and features Modify general description and features Modify RFIO description Update power on timing diagram Modify Bluetooth description Update Mark Information Co Release Date 2016/02/02 2016/6/20 2016/8/16 2016/9/066 2016/9/0 2016/12/29 2016/12 2016/ 12//29 29 2017/04/10 2018/12/06 2019/05/24 2019/05 2019 /05 Re al te k Revision 0.1 0.2r05 0.2r07 0.2r08 0.2r09 0.2r10 0.2r15 0.2r16 nf REVISION HISTORY en hat this document is current and accurate, more information Though every effort has been made to ensure that may have become available subsequent to the production of this guide. Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface ii Track ID: Rev. 0.2r16 RTL8821CU Datasheet Table of Contents 1. GENERAL DESCRIPTION .......................................................................................................................................1 2. FEATURES .................................................................................................................................................................3 3. APPLICATION DIAGRAMS.....................................................................................................................................6 3.1. PIN ASSIGNMENTS ..................................................................................................................................................7 .................. PIN DESCRIPTIONS .................................................................................................................................................9 ................................................. ................................ ................. 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. 5.7. 5.8. 5.9. 6. POWER ON TRAP PIN .............................................................................................................................................9 ................................ USB TRANSCEIVER INTERFACE .............................................................................................................................9 ............................................................. ................................ ............................. EEPROM INTERFACE ...........................................................................................................................................9 ................................................................ ................................ ................................ RF INTERFACE .................................................................................................................................................... ................................ 10 LED INTERFACE ................................................................................................................................................. ................................................................ ................................ ................................ 10 POWER MANAGEMENT HANDSHAKE INTERFACE .................................................................................................. ................................ 10 PCM INTERFACE ................................................................................................................................................. ................................................................ ................................ ................................ 11 CLOCK AND OTHER PINS ..................................................................................................................................... ................................ 11 POWER PINS........................................................................................................................................................ ................................................................ ................................ ................................ 11 oc um 5. PACKAGE IDENTIFICATION & MARK INFORMATION ................................................................................................8 ................................ en t 4.1. lD 4. 11AC DUAL-BAND 1X1 RF APPLICATION ...............................................................................................................6 ELECTRICAL AND THERMAL CHARACTERISTICS....................................................................................... ................................ 13 7. en tia 6.1. TEMPERATURE LIMIT RATINGS ............................................................................................................................ ................................ 13 6.2. DC CHARACTERISTICS ........................................................................................................................................ ................................................................ ................................ ................................ 13 6.2.1. Power Supply Characteristics ....................................................................................................................... ................................................................ ................................ ................................ 13 6.2.2. Digital IO Pin DC Characteristics ................................ ................................................................ ................................................................................................................. ................................ 13 INTERFACE TIMING SPECIFICATION .............................................................................................................. ................................ 14 MECHANICAL DIMENSIONS DIMENSIONS ................................ ............................................................................................................................... 18 8.1. ORDERING INFORMATION ................................................................................................................................. 20 Re 9. MECHANICAL DIMENSIONS NOTES ...................................................................................................................... 19 al te k 8. Co nf id 7.1. USB BUS TIMING DURING POWER ON SEQUENCE................................ ................................................................................................. 14 7.2. PCM INTERFACE CHARACTERISTICS ................................ .................................................................................................................... 15 7.2.1. PCM Format ................................ ................................................................ ................................................................................................................................................. ................................ 15 7.2.2. Sign Extension and Zero Padding for 88-Bit 8 --Bit Bit and 13 13-Bit Samples ...................................................................... 15 7.2.3. PCM Interface Timing ................................................................................................................................... ................................ 17 7.3. SYSTEM POWER SEQUENCE ................................ ................................................................................................................................. 17 7.3.1. Power Off Sequence................................ Sequence....................................................................................................................................... Sequence ................................ 17 Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface iii Track ID: Rev. 0.2r16 RTL8821CU Datasheet List of Tables lD oc um en t TABLE 1. POWER-ON TRAP PINS ......................................................................................................................................9 TABLE 2. USB TRANSCEIVER INTERFACE .........................................................................................................................9 TABLE 3. EEPROM INTERFACE .............................................................................................................................................9 TABLE 4. RF INTERFACE ...................................................................................................................................................... 10 TABLE 5. LED INTERFACE ............................................................................................................................................. 10 TABLE 6. POWER MANAGEMENT HANDSHAKE INTERFACE .................................................................................................... 10 TABLE 7. PCM INTERFACE ................................................................................................................................................... ................... 11 TABLE 8. CLOCK AND OTHER PINS ................................................................................................................................ ................................ 11 TABLE 9. POWER PINS ................................................................................................................................................... ................................................... ................................ ................... 12 TABLE 10. TEMPERATURE LIMIT RATINGS....................................................................................................................... ....................................................... ................................ ....................... 13 TABLE 11. DC CHARACTERISTICS .................................................................................................................................. ................................ 13 TABLE 12. 3.3V GPIO DC CHARACTERISTICS ............................................................................................................... ................................ 13 TABLE 13. THE TYPICAL TIMING RANGE ........................................................................................................................... ........................................................... ................................ ........................... 14 TABLE 14. RTL8821CU-CG POWER OFF TIMING PARAMETERS ....................................................................................... ................................ 17 TABLE 15. PACKAGE DIMENSIONS NOTES ...................................................................................................................... ................................ 19 tia List of Figures Re al te k Co nf id en FIGURE 1. DUAL-BAND MIMO 1X1 SOLUTION(11AC 1X1 MAC/BB/RF MAC/BB/RF + PA) AND INTEGRATED BLUETOOTH CONTROLLER SOLUTION --- RTL8821CU-CG ......................................................................................................................................6 ................................ FIGURE 2. PIN ASSIGNMENTS ............................................................................................................................................7 ................................ FIGURE 3. RTL8821CU-CG USB BUS POWER ON SEQUENCE ................................ ......................................................................................... 14 FIGURE 4. LONG FRAMESYNC ................................................................................................................................................ ................................ 15 FIGURE 5. SHORT FRAMESYNC ................................ .............................................................................................................................................. ................................................................ ................................ 15 FIGURE 6. 16-BIT OUTPUT DATA WITH 8-BIT PCM SAMPLE DATA AND SIGN E XTENSION ........................................................ 16 FIGURE 7. 16-BIT OUTPUT DATA WITH 8-BIT PCM SAMPLE DATA AND ZERO PADDING ........................................................... 16 FIGURE 8. 16-BIT OUTPUT DATA WITH 13-B --B BIT PCM SAMPLE DATA AND SIGN E XTENSION ...................................................... 16 FIGURE 9. 16-BIT OUTPUT DATA WITH 13 13-B 13-B BIT PCM SAMPLE DATA AND AUDIO GAIN ............................................................. 16 FIGURE 10. PCM INTERFACE (LONG FRAMESYNC) ................................................................................................................. 17 FIGURE 11. RTL8821CU-CG POWER OFF SEQUENCE ........................................................................................................... 17 FIGURE 12. PACKAGE DIMENSIONS ................................ ........................................................................................................................................ 18 Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface iv Track ID: Rev. 0.2r16 RTL8821CU Datasheet 1. General Description The Realtek RTL8821CU-CG is a highly-integrated IEEE 802.11 a/b/g/n/ac MAC/Baseband/RF WLAN and Bluetooth Baseband/RF single chip. For Wireless LAN (WLAN) operation, it supports 1-stream 802.11ac solution with Multi-user MIMO (Multiple-Input, Multiple-Output) STA mode with USB2.0 network interface controller. For Bluetooth operation, it supports Bluetooth Smart Ready with USB interface controller. oc um en t Output (MIMO) The RTL8821CU-CG baseband implements multiuser Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (OFDM) STA mode with one transmit and one receive path (1T1R). Features include one spatial stream transmission, short Guard Interval (GI) of 400ns, spatial CG provides one spatial spreading, and support for variant channel bandwidths. Moreover, RTL8821CU-CG stream Space-Time Block Code (STBC) and Low Density Parity Check (LDPC) to extend the range of transmission. As the recipient, the RTL8821CU-CG also supports explicit sounding packet feedback that helps senders with beamforming capability. id en tia lD y, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK) For legacy compatibility, and OFDM baseband processing are included to support all IEEE 802.11a 802.11 a,, 802.11 802.11a, 802.11b and 802.11g data rates. Differential phase shift keying modulation schemes, DBPSK and DQPSK with data scrambling capability, are available. CCK provides support for legacy data rates, with long or short preamble. The high speed FFT/IFFT paths are combined with BPSK, QPSK, 16QAM, 64QAM and 256QAM modulation of the ng rate of 1/2, 2/3, 3/4, and 5/6 provide individual subcarriers. The compatible coding provides up to 433.3Mbps for IEEE 802.11ac with MIMO-OFDM. Co nf The RTL8821CU-CG builds in an enhanced signal detector, an adaptive frequency domain equalizer, and a decision Viterbi decoder to alleviate severe multi soft-decision multi-path effects and mutual interference in the reception of multiple streams. Robust interference detection and suppression are provided to protect against Bluetooth, cordless phone, and microwave oven interference. al te k Receive vector diversity for multi multi-stream application is implemented for efficient utilization of the MIMO channel. Efficient IQIQ -imbalance, DC offset, phase noise, frequency offset, and timing offset compensations IQ-imbalance, are provided for the radio frequency front front-end. Re RTL8821CU-CG CG supports fast receiver Automatic Gain Control (AGC) with synchronous and The RTL8821CU RTL8821CU-CG asynchronous control loops among antennas, antenna diversity functions, and adaptive transmit power control functions to obtain better performance in the analog portions of the transceiver. The RTL8821CU-CG MAC supports 802.11e for multimedia applications, 802.11i and WAPI (Wireless Authentication Privacy Infrastructure) for security, and 802.11n/ac for enhanced MAC protocol efficiency. Protocol efficiency is significantly improved by using packet aggregation techniques, such as A-MPDU Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 1 Track ID: Rev. 0.2r16 RTL8821CU Datasheet with BA and A-MSDU. Power saving mechanisms, such as Legacy Power Save, U-APSD, and MIMO, can reduce the power wasted during idle time. They can also compensate for the extra power required to transmit MIMO-OFDM. The RTL8821CU-CG provides simple legacy and 20MHz/40MHz/80MHz co-existence mechanism to ensure backward and network compatibility. Re al te k Co nf id en tia lD oc um en t The RTL8821CU-CG Bluetooth controller complies with Bluetooth core specification v4.2, and supports dual mode (BR/EDR + AMP + Low Energy Controllers). It is backward compatible with previous versions including v2.1 + EDR. For BR/EDR, it can support scatternet topology up to four active links in slave mode, tiple states and allows eight active and seven active links in master mode. For Low Energy, it supports multiple links in master mode. Both BR/EDR and LE can operate simultaneously. Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 2 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 2. Features General Information  CMOS MAC, Baseband PHY and RF in a single chip for IEEE 802.11a/b/g/n/ac compatible WLAN  Support 802.11ac 1x1,Wave-2 compliant with MU-MIMO STA mode  Complete 802.11n MIMO solution for 2.4GHz and 5Ghz band  Maximum PHY data rate up to 86.7Mbps using 20MHz bandwidth, 200Mbps using 40MHz bandwidth, and 433.3Mbps using 80MHz bandwidth.  802.11a/b/g Backward compatible with 802.11a/b/g devices while operating at 802.11n data rates  Backward compatible with 802.11a/n devices while operating at 802.11ac data rates.  USB LPM/Selective Suspend supported en t 56pins QFN oc um  Complies with USB 2.0 for WLAN and BT controller  USB Multi-Function for both BT (USB function 0) and WLAN (USB function 1) en Standards Supported IEEE 802.11a/b/g/n/ac compatible WLAN   IEEE 802.11i (WPA, WPA2). Open, shared wise key authentication key, and pair-wise services IEEE 802.11k Radio Resource Measurement IEEE 802.11e QoS Enhancement (WMM)  WAPI (Wireless Authentication Privacy Infrastructure) certified.  Cisco Compatible Extensions (CCX) for WLAN devices Frame aggregation for increased MAC efficiency (A (A-MSDU, A-MPDU)  PHY-level spoofing to enhance legacy compatibility Low latency immediate Acknowledgement (BA)  Channel management and co-existence  Multiple BSSID feature allows the RTL8821CU-CG to assume multiple MAC identities when used as a wireless bridge Co id  nf  IEEE 802.11h DFS, TPC, Spectrum Measurement al te k  tia  lD Host Interface MAC Features Re    Block Long NAV for media reservation with CF-End for NAV release Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 3 Track ID: Rev. 0.2r16 RTL8821CU Datasheet  Transmit Opportunity (TXOP) Short Inter-Frame Space (SIFS) bursting for higher multimedia bandwidth  WiFi Direct supports wireless peer to peer applications.  WiFi NAN (Neighborhood Area Network) support  WiFi FTM (Fine Time Measurement) supported  WiFi TDLS (Tunneled Direct Link Setup) Supported  Support Network List Offload  CCA on secondary through RTS/CTS handshake.  Support TCP/UDP/IP checksum offload Supports Wake-On-WLAN Packet and Wake-up frame via Magic  Transmit Beamforming  Support S3/S4 AES/TKIP group key update lD Peripheral Interfaces oc um  en t Other Features Up to 15 General Purpose Input/Output pins  Generates 40MHz clock for peripheral chip.  Three configurable LED pins (mux with GPIO pins)  Single external power source 3.3V only en PHY Features tia  IEEE 802.11ac OFDM  IEEE 802.11n OFDM  One Transmit and One Receive path  5MHz / 10MHz / 20MHz / 40MHz / 80MHz bandwidth transmission  Support 2.4GHz and 5GHz band channels  Short Guard Interval (400ns)  packet. Sounding packet.  DSSS with DBPSK and DQPSK, CCK modulation with long and short preamble Re al te k Co nf id   OFDM with BPSK, QPSK, 16QAM, 64QAM and 256QAM modulation. Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 4 Convolutional Coding Rate: 1/2, 2/3, 3/4, and 5/6  Maximum data rate 54Mbps in 802.11g, 150Mbps in 802.11n and 433.3bps in 802.11ac.  Switch diversity used for DSSS/CCK  Support STBC Receiving  Support LDPC Transmitting  Hardware antenna diversity  Fast receiver Automatic Gain Control (AGC)  On-chip ADC and DAC  Build-in both 2.4GHz and 5GHz PA  Build-in both 2.4GHz and 5GHz LNA Track ID: Rev. 0.2r16 RTL8821CU Datasheet Bluetooth Controller Compatible with Bluetooth 2.1+EDR  Supports Secure Simple Pairing  Support Bluetooth 4.2 system   Integrated MCU to execute Bluetooth protocol stack Enhanced BT/WIFI Coexistence Control to improve transmission quality in different profiles  Supports all packet types in basic rate and enhanced data rate  Bluetooth 4.0 Dual Mode support: Simultaneouss LE and BR/EDR  Support Bluetooth 5.0 High Duty Cycle Non-Connectable Advertising  Supports multiple Low Energy states  Supports Bluetooth Low Energy  Integrated 32K oscillator for power management Fast AGC control to improve receiving dynamic range  Integrated internal Class 1, Class 2, and Class 3 PA  Supports Enhanced Power Control Re al te k Co nf id en tia  lD Bluetooth Transceiver oc um en t  Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 5 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 3. Application Diagrams 3.1. 11ac Dual-Band 1x1 RF Application Selectalbe Antenna 24 , 26 , 27 and 40 MHz , Crystal 3. 3 V SPS / LDO RX I/ Q LNA 2.4GHz MAC WLAN PA Configuration 2.4/5G Control and LNA Balun PA TX I/ Q PTA ( PHY ) tia BT Interface BT RAM MCU Controller Modem en 2.4GHz PA USB DPDT_SEL BT BB BTG RF Transceiver BT LE Controller HCI id Balun MCU Baseband lD 5GHz External WLAN Memory DA C WLAN 5GHz RF Transceiver Internal Interface oc um Internal A DC WLAN 2.4GHz RF Ext Balun DPDT en t NV Memory Regulators Diplexer selectable , Antenna nf RTL8821CU Re al te k Co Figure 1. Dual-Band MIMO 1x 1x1 1 Solution(11 Solution(11ac 1x1 MAC/BB/RF + PA) and Integrated Bluetooth Controller Solution --- RTL8821CU-CG Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 6 Track ID: Rev. 0.2r16 RTL8821CU Datasheet Pin Assignments id en tia lD oc um en t 4. Re al te k Co nf Figure 2. 2 Pin Assignments Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 7 Track ID: Rev. 0.2r16 RTL8821CU Datasheet lD oc um en t 4.1. Package Identification & Mark Information Re al te k Co nf id en tia Figure 2,, ‘Green’ package is indicated by a ‘G’. The location marked is indicated by ‘T’. The version is shown in the location marked ‘V’. Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 8 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 5. Pin Descriptions The following signal type codes are used in the table 1 to 9, I: Input P: O: Output N/A: No Bonding pin Power pin en t I/O: Input/Output pin Pin No. 5 SPS_LDO_SEL I 6 EEPROM_SEL I 46 Description This pin is also shared with GPIO4 0: Normal operation mode 1: Test/debug mode This pin is also shared with GPIO5 0: Internal switching regulator select 1: Internal LDO select This pin is also shared with EESK pin 0: Internal NV memory select 1: External EEPROM select tia lD Type I en Symbol TEST_MODE_SEL oc um 5.1. Power on Trap Pin Table 1 1.. PowerPower Power-On -On On Trap Pins Type I/O //O O I/O II/ /O O Pin No 51 52 Co Symbol HSDP HSDM nf id 5.2. USB Transceiver Interface Table 2. Description High-Speed USB D+ Signal High-Speed USB D- Signal USB Transceiver Interface al te k 5.3. EEPROM Interface Re Symbol EECS EESK Type O O Pin No 10 46 Description External EEPROM Chip Select External EEPROM Clock Table 3. EEPROM Interface Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 9 Track ID: Rev. 0.2r16 5.4. RF Interface Symbol WLS1_2G/BTS0_P WLS1_2G/BTS0_N DPDT_SEL_P DPDT_SEL_N PAPE_5G LNAON_5G WLS0_5G_RFIO WLS0_2G_RFIO Type I/O I/O O O O O O O Pin No 15 16 17 18 19 20 22 25 Description BT/WLAN 2G RF Differential I/O P BT/WLAN 2G RF Differential I/O N External DPDT CONTROL External DPDT CONTROL External 5G PAPE CONTROL External 5G LNA CONTROL WLAN 5G RF I/O WLAN 2G RF I/O oc um Table 4. RF Interface 5.5. LED Interface Pin No 7 8 9 Description LED Pin (Active Low) LED Pin (Active Low) LED Pin (Active Low), Low), shared with GPIO8 lD Type O O O Table 5. tia Symbol LED0 LED1 LED2 en t RTL8821CU Datasheet LED Interface Interface I Re CHIP_EN I Description Shared with GPIO9. This pin can externally shut down the RTL8821CU-CG WLAN function when WL_DIS# is pulled low. RTL8821CU When this pin is pulled low, USB interface will be disabled. This pin can also be configured as the WLAN Radio-off function with host interface remaining connected. Shared with GPIO11. This pin can externally shut down the RTL8821CU-CG BT function when BT_DIS# is pulled Low. When this pin is pulled low, USB interface will be also disabled. This pin can be also defined as the BT Radio-off function with host interface remaining connected. This Pin Can externally shut down the RTL8821CU-CG (No Extra Power Switch Required). When this function is not required, external pull high is required. nf Pin No 37 56 al te k BT_DIS# Type I Co Symbol WL_DIS# id en 5.6. Power Management Handshake Interface 47 Table 6. Power Management Handshake Interface Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 10 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 5.7. PCM Interface Symbol PCM_IN PCM_OUT PCM_SYNC PCM_CLK Type I O O I/O Pin No 1 2 3 4 Description PCM data Input, shared with GPIO0 PCM data Out, shared with GPIO1 PCM Synchronization control, shared with GPIO2 PCM Clock, shared with GPIO3 en t Table 7. PCM Interface 5.8. Clock and Other Pins oc um lD tia 32 10 1 2 3 4 5 6 35 36 9 37 56 39 40 26 en O I I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O Description 26M/40MHz OSC Input Input of 26M/40MHz 40MHz Crystal Clock Reference Output of 26MHz/40MHz 40MHz Crystal Clock Reference Shared with EECS. External 32K or RTC clock input. General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin General Purpose Input/ Output Pin Not Connect id Pin No 31 nf XO SUS_CLK GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 GPIO8 GPIO9 GPIO11 GPIO13 GPIO14 NC Type I Co Symbol XI Clock and Other Pins al te k Table 8. Re 5.9. Power Pins Symbol LX_SPS _SPS VD33_SPS VD33_IO VDD_IO_1 VDD_IO Type P P P P P Pin No 44 43 42 55 38 Description Switching Regulator Output Switching Regulator Input VDD3.3V for Digital IO VDD for GPIO0~5 , GPIO11 VDD for GPIO9.EECS,CHIP_EN,GPIO6,GPIO7,GPIO13,GPIO14 Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 11 Track ID: Rev. 0.2r16 41 54 45 27 53 49 50 48 13 14 11 12 23 24 21 28 29 30 33 34 1.05V for WLAN digital power 1.05V for BT digital power Switching Regulator Ground GND USB Ground 1.05V for USB 3.3V for USB Precision Resistor for Bandgap VDD 1.05V for BT RF VDD 3.3V for BT PAD VDD 1.05V for BT synthesizer VDD 3.3V for BT synthesizer VDD 3.3V for WLAN PA VDD 3.3V for WLAN PA VDD 1.05V for WLAN RF VDD 1.05V for WLAN RF VDD 1.05V for WLAN synthesizer VDD 3.3V for WLAN synthesizer synthesizer VDD 3.3V for crystal VDD 1.05V for crystal oc um P P P P P P P P P P P P P P P P P P P P lD VD10D_WL VD10D_BT GND_SPS GND GND_V33USB V10_USB V33_USB RREF VD1_ BT VD33_PAD_BT VD1_SYN_BT VD33_SYN_ BT VD33_PA_WL VD33_PA_WL VD1_RF_WL VD1_RF_WL VD1_SYN_WL_ VD33_SYN_WL VD33X VD10A en t RTL8821CU Datasheet Re al te k Co nf id en tia Table 9. Power Pins Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 12 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 6. Electrical and Thermal Characteristics 6.1. Temperature Limit Ratings Minimum -55 0 0 Maximum +125 70 125 Table 10. Temperature Limit Ratings Power Supply Characteristics Parameter 3.3V I/O Supply Voltage 1.05V Core Supply Voltage Minimum 3.0 0.945 Typical 3.3 1.05 Maximum 3.6 1.155 Units V V Maximum 3.6 0.9 3.3 0.33 Units V V V V tia Symbol VD33 VD10 lD 6.2.1. oc um 6.2. DC Characteristics Units C C C C en t Parameter Storage Temperature Ambient Operating Temperature Junction Temperature en Table 11. DC Characteristics Parameter Input high voltage Input low voltage oltage Output high voltage Output low voltage nf Symbol VIH VIL VOH VOL id Digital IO Pin DC Characteristics Co 6.2.2. Minimum 2.0 -2.97 0 Normal 3.3 0 --- Table 12. 3.3V GPIO DC Characteristics Re al te k * 3.3V and 1.2V ripple < 100mV Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 13 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 7. Interface Timing Specification 7.1. USB Bus Timing during Power On Sequence 3.3V Ton Tpor Card Detection Tattach D+/TERM TXTAL en t XTAL POR oc um T1v0 1.05V chip_en Ten Ton lD Figure 3. RTL8821CU-CG USB Bus Power On Sequence en tia Ton: The main power ramp up duration Tpor: The power on reset releases and power management unit executes power on tasks Tattach: USB attach state. The duration from resistorr attached to USB host starting card detection procedure Txtal: XTAL starts Ten: Interval between the rising point of 3.3V and chip_en Symbol Re al te k Ton Tpor Txtal Tattach T1v0 Ten Co nf id The power on flow description: After main 3.3V ramp up, the internal power on reset is releas released by power ready detection circuit and the power management unit will be enabled. The power management unit enables the internal regulator and clock circuits. The power management unit also enables the USB circuits. USB analog circuits attach resisters to indicate the insertion of the USB device Unit ms ms ms ms ms ms Min ---100 0 Typical 1.5 2 1.5 250 3 0 Max 5 20 8 -11 5 Table 13. The typical timing range Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 14 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 7.2. PCM Interface Characteristics Supports Master and Slave mode Programmable long/short Frame Sync Supports 8-bit A-law/µ-law, and 13/16-bit linear PCM formats Supports sign-extension and zero-padding for 8-bit and 13-bit samples Supports padding of Audio Gain to 13-bit samples PCM Master Clock Output: 64, 128, 256, or 512kHz Supports SCO/ESCO link 7.2.1. oc um        en t The RTL8821CU-CG supports a PCM digital audio interface that is used for transmitting digital audio/voice data to/from the Audio Codec. Features are supported as below: PCM Format lD FrameSync is the synchronizing function used to control the transfer of DAC_Data and ADC_Data. A Long FrameSync indicates the start of ADC_Data at the rising edge of FrameSync ((Figure 4), and a Short FrameSync indicates the start of ADC_Data at the falling edge of FrameSync ((Figure 5). tia FrameSync en BCLK DAC_Data id ADC_Data FrameSync al te k BCLK Co nf Figure 4. 4. Long FrameSync DAC_Data Re ADC_Data 7.2.2. Figure 5. Short FrameSync Sign Extension and Zero Padding for 8-Bit and 13-Bit Samples For 16-bit linear PCM output, 3 or 8 unused bits may be sign extended/zero padded (Figure 6, Figure 7, Figure 8, Figure 9) Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 15 Track ID: Rev. 0.2r16 RTL8821CU Datasheet Sign Extension DAC_Data 1 2 3 4 5 8-bit PCM sample data 6 7 8 9 10 11 12 13 14 15 16 Figure 6. 16-Bit Output Data with 8-Bit PCM Sample Data and Sign Extension DAC_Data 1 2 3 4 5 6 Zero Padding 7 8 9 10 11 12 13 en t 8-bit PCM sample data 14 15 16 Sign Extension 1 2 3 13-bit PCM sample data 4 5 6 7 8 9 10 11 12 13 14 15 16 lD DAC_Data oc um Figure 7. 16-Bit Output Data with 8-Bit Bit PCM Sample Data and Zero Padding Figure 8. 16-Bit Output Data with 13-Bit Bit PCM Sample Data and Sign Extension tia For 16-bit linear PCM output, 3-bit bit programmable audio gain value can be padded to 13 13-bit sample data. 1 2 3 4 5 6 7 8 9 10 Audio Gain 11 12 13 14 15 16 id DAC_Data en 13-bit PCM sample data Re al te k Co nf Figure 9. 16-Bit Bit Output Data with 13 13-Bit PCM Sample Data and Audio Gain Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 16 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 7.2.3. PCM Interface Timing TFrameSync_Delay FrameSync FBCLK TBCLKH TBCLKL en t BCLK DAC_Data oc um TBCLKD_OUT MSB(LSB) LSB(MSB) TSETUPIN THOLDIN DAC_Data lD MSB(LSB) LSB(MSB) Power Off Sequence nf id 7.3.1. en 7.3. System Power Sequence tia Figure 10.. PCM Interface (Long FrameSync) 3.3V Re al te k Co 3.3V 3.3 V (Power) 0V TPDN_CHIP High CHIP_EN Low Figure 11. RTL8821CU-CG Power Off Sequence Table 14. RTL8821CU-CG Power Off Timing Parameters Min Typical Max Unit Description TPDN_CHIP 100 100 X ms CHIP_EN keep low duration CHIP_EN can externally shutdown the RTL8821CU-CG when CHIP_EN is pulled low. The keeping low duration must be more than TPDN_CHIP Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 17 Track ID: Rev. 0.2r16 RTL8821CU Datasheet Mechanical Dimensions Re al te k Co nf id en tia lD oc um en t 8. Figure 12. Package Dimensions Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 18 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 8.1. Mechanical Dimensions Notes Min 0.80 0.00 0.15 4.10 4.75 0.30 Max 0.90 0.05 Min 0.031 0.000 0.25 0.006 4.30 4.95 0.161 0.187 0.50 0.012 Dimension in inch Nom 0.033 0.001 0.008 REF 0.008 08 0.276 276 BSC 0.165 0. 165 0.191 0.016 0. 016 BSC 0.016 0.0 0.010 0.169 0.195 0.020 lD Notes： MILLIMETER(mm). 1. CONTROLLING DIMENSION：MILLIMETER(mm). JEDEC MO-220. MO-220. MO220. 2. REFERENCE DOCUMENTL：JEDEC Max 0.035 0.002 en t A A1 A3 b D/E D2 E2 e L Dimension in mm Nom 0.85 0.02 0.2 REF 0.20 7.00 BSC 4.20 4.85 0.40 BSC 0.40 oc um Symbol Re al te k Co nf id en tia Table 15. Package Dimensions Notes Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 19 Track ID: Rev. 0.2r16 RTL8821CU Datasheet 9. Ordering Information Part Number RTL8821CU-CG Package QFN56 , ‘Green’ Package Status Mass Production al te k Co nf id en tia lD oc um en t Table 15. Ordering Information Re Realtek Semiconductor Corp. Headquarters No. 2, Innov Innovation ation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan, R.O.C. Tel: 886-3-5780211 Fax: 886-3-5776047 www.realtek.com Single-Chip 802.11 a/b/g/n/ac 1T1R WLAN Controller with USB 2.0 Interface 20 Track ID: Rev. 0.2r16