NXP ARM9 LPC 3100 Arm926EJ-S

 

https://www.nxp.com.cn/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc3000-arm9:MC_71572#/

https://www.nxp.com.cn/products/no-longer-manufactured/arm926ej-s-with-192-kb-sram-usb-high-speed-otg-host-device-sd-mmc-nand-flash-controller:LPC3152FET208

BGA LAYOUT GUIDE

https://www.nxp.com.cn/docs/en/application-note/AN10778.pdf