This post explains for the system-on-chip.
The Part Number is AR9341.
The function of this semiconductor is Feature-Rich IEEE 802.11n 2×2 2.4 GHz Premium SoC.
The Package is 150-pin dual-row LPCC.
Manufacturer: Atheros, Teslacomm
The Atheros AR9341 is a highly integrated and feature-rich IEEE 802.11n 2×2 2.4 GHz System-on-a-Chip (SoC) for advanced WLAN platforms.
It includes a MIPS 74Kc processor, five port IEEE 802.3 Fast Ethernet Switch with MAC/PHY, one
USB 2.0 MAC/PHY, and external memory interface for serial Flash, SDRAM, DDR1 or DDR2, I2S/SPDIF-Out audio interface, SLIC VOIP/PCM interface, two UARTs, and GPIOs that can be used for LED controls or other general purpose interface configurations. […]
1. 74Kc MIPS processor with 64 KB I-Cache and 32 KB D-Cache, operating at up to 533 MHz
2. External 16-bit DDR1, DDR2 operating at up to 200 MHz (400 M transfers/sec), or 16-bit
SDRAM memory interface operating at up to 200 MHz
3. SPI NOR Flash memory support 10/100 Ethernet Switch with five IEEE 802.3
It offers a cost-effective and feature-rich solution for wireless communication in a variety of applications, enabling the deployment of reliable and high-performance wireless networks.