Atheros AR5523

• The AR5523 is a USB to Wi-Fi single chip, typically used in Wi-Fi dongles.

Properties

• Manufacturer: Atheros
• Part name: AR5523
• Type: chip
• SOC Architecture: RISC - See MIPS 4Kp.
• Processor Identification: 0001830a

(Processor ID: 0x83; Rev: 0x0a)

SOC clock: up to 40 MHz

SOC RAM: 256 KByte

• Operating temperature range: 0 to 95 C°
• Standard 0.18 μm CMOS technology
• 10 mm x 10 mm, 68 LPCC package
• With the AR5112/AR2112 Complete all-CMOS solution for 802.11a (5.15–5.85 GHz) and 802.11b/g (2.312–2.472 and 2.484 GHz) frequency band operation.

Pins

• 9 - SPI MISO
• 10 - SPI_MOSI
• 11 - SPI CS
• 13 - SPI CLK

• 6 - JTAG TRST_L - test reset
• 8 - JTAG TCK - test clock
• 31 - JTAG EJTAG_SEL - test data output
• 66 - JTAG TDI - test data input
• 67 - JTAG TDO - test data output
• 68 - JTAG TMS - test mode select

• 36 - system reset

• 30 - UART Rx
• 32 - UART Tx (baudrate 9600)

firmware

boot log

AR5523 USB Bootloader - Version : 1.6 , Jul 21 2004                          
Available Memory : 196316 bytes                                              
Downloading image @ 0x80010200 size - 153416 bytes                           
Download complete, executing image @ 0x80010200                              
                                                                             
Overide : 0 en : 0                                          
Memory used: 31248 Free: 54300                              
                                                            
[Buffer size Tx: 21060  Rx: 19470]                          
                                                            
Target started  

JTAG

impcode: 0x40004000
EJTAG: Version 2.6 Detected
EJTAG main: features: noDMA MIPS32
EJTAG v2.6: features: R4k