Qualcomm/QCN9074


 * QCN9074 • 802.11ax 4x4 2.4/5/6GHz (NHX9074)

QCN9074 is an 802.11ax Wi-Fi 6E PCIe radio for Enterprise Access Points, Retail Routers, Range Extenders and Carrier Gateways.
 * QCN9074-0 with Qualcomm 802.11ax technology is a highly integrated wireless local area network (WLAN) system-on-chip (SoC)
 * for 2.4/5/6GHz 802.11ax applications. QCN9074 performs AP and STA functionality with4x4 MIMO and 4 spatial streams.

The QCN9074 is a dual-synthesizer WLAN radio with native 160MHz support. It includes a CPU with local SRAM for time critical
 * management functions of the media access layer (MAC) and physical layer (PHY). The QCN9074-0 integrates a multi- protocol MAC,
 * 4x4 MIMO PHY, analog-to-digital/digital-to-analog converters (ADC/DAC), 4-antenna radio transceivers, and a PCIe interface
 * in an all-CMOS device for low power consumption and small form-factor applications.

The QCN9074 chipset implements half-duplex OFDM, CCK, and DSSS PHY, and complies with 802.11a/b/g/n/ac/ax.
 * In 5GHz and 6GHz bands, the maximum PHY rate of 4949Mbps is achieved in 802.11ax 4x4/160MHz native operation.
 * In 2.4GHz bands, a maximum PHY rate of 573.5Mbps for 20MHz and 1147Mbps for 40MHz is supported.

Additional features include 802.11ax and 802.11ac explicit transmit beamforming (TxBF), DL/UL multi-user MIMO (MU-MIMO)
 * up to 4 users, DL/UL multi user OFDMA up to 37 users, Dynamic Bandwidth Switching, agile DFS and agile spectrum analysis,
 * where designated chain #3 scans another channel than the serving channel during listen receive intervals, Maximum
 * Likelihood (ML) decoding, Low-Density Parity Check (LDPC), Maximum Ratio Combining (MRC), Space Time Block Code (STBC).
 * The QCN9074 also supports the following protocols: 802.11d/h/i/j/k/r/u/v/w/x.

The QCN9074 chipset supports up to four simultaneous spatial streams integrating four Tx and four Rx chains for high throughput and
 * extended coverage. Tx chains combine PHY in-phase (I) and quadrature (Q) signals, convert them to the desired RF radio frequency.

External power amplifiers increase the signal strength to the desired EIRP. Rx chains receive from antennas through external LNAs.
 * The frequency synthesizer supports 1-MHz steps to match frequencies defined by 802.11a/b/g/n/ac/ax specifications.

The QCN9074 supports frame data transfer to and from the host using a 1 or 2 lane PCIe gen3 interface that supports
 * interrupt generation and status reporting.

Other external interfaces include EEPROM, GPIO, UART, PTA, and MCI interfaces for radio coexistence management.


 * General
 * • 4x4/160 MHz 11ax PCIe Radio, Dual Lane PCIe G3
 * • Tri-band: 2.4GHz, 5GHz, 6GHz full band support
 * • Package: 11.1x12 FCBGA, 0.65mm ball pitch


 * WLAN
 * • Dual-synthesizer WLAN radio up to 160MHz band width support
 * • Supports 5/10MHz in 4.9GHz (Public Safety band), 20/40MHz in 2.4GHz
 * • Supports 20/40/80/160MHz in 5GHz, 20/40/80/160MHz in 6GHz
 * • DL/UL MU-MIMO, up to 4 users per PPDU, DL/UL MU-OFDMA, up to 37 users per PPDU
 * • TxBF, MU-MIMO, MU-OFDMA/TxBF, ML, STBC, Agile DFS (dynamic switching between 4 and 3+1)
 * • Agile Spectral Analysis (aSA) for all bands (dynamic switching between 4 and 3+1)
 * • Supports up to 1024-QAM (4SS) and 4096Q-AM (2SS), PTA (3-wire) and MCI (2-wire) coexistence
 * • Data rates of up to 4949Mbps in 802.11ax 160MHz channels using reduced (short) guard interval (GI)
 * • Data rates of up to 573.5Mbps for 20MHz and 1147Mbps for 40MHz channel in 2.4GHz mode using short GI
 * • Multi-user multiple input multiple output (MU-MIMO) for 802.11ac/ax
 * • 802.11 ac/ax explicit transmit beamforming (TxBF), 802.11 ac/ax beamformee for STA mode
 * • Spatial reuse through BSS color, OBSS-PD, SRG and SRP, AMSDU and AMPDU frame aggregation
 * • TCP and UDP checksum offload, Dynamic bandwidth switching, Maximum likelihood (ML) decoding
 * • Supports low-density parity check (LDPC), maximal ratio combining (MRC), Space Time Block Code (STBC)
 * • A-MSDU: No limit on the number of MSDUs aggregated, only limited by maximum A-MSDU size, which is approx 11kB
 * • A-MPDU: Maximum 256 MPDU per PPDU
 * • 802.11e-compatible bursting, Digital Pre-Distortion (DPD), Locationing (RSSI and RTT-based, 802.11REVmc compliant)


 * Supported Standards
 * • 802.11a/b/g/n/ac/ax, 802.11d, e, h, i, j, k, r, u, v timestamp, and w


 * CPU/Memory
 * • Integrated CPU with SRAM memory, On-chip OTP memory


 * Interfaces
 * • PCI Express 3.0 dual-lane interface
 * • I2C EEPROM support, GPIOs, UART
 * • JTAG for debugging and boundary scan


 * RF Interfaces
 * • Four interfaces to external 2.4GHz PAs
 * • Four interfaces to external 5GHz and 6GHz PAs
 * • Four interfaces to external LNAs for all bands
 * • Four PDET interfaces for Front End feedback control signals
 * • RFSAT and BBSAT; RFSAT improves AACI and ACI performance and BBSAT enables quick AGC
 * • MIPI interface for Front End Control


 * Security
 * • AES-CCMP at 128/256 bits, AES-GCMP at 128/256 bits
 * • WEP, TKIP hardware encryption
 * • WAPI hardware encryption, FIPS ECB
 * • WPA/WPA2-Personal/WPA2-Enterprise and WPA3 Personal