Section number Title Page
2.8 SerDes port......................................................................................................................................................................27
2.8.1 PCI Express support ..........................................................................................................................................28
2.8.2 SGMII support................................................................................................................................................... 29
2.8.3 SATA support.................................................................................................................................................... 29
2.9 Ethernet controllers.........................................................................................................................................................29
2.10 Ethernet management interfaces.....................................................................................................................................31
2.11 USB interface..................................................................................................................................................................32
2.12 Local bus.........................................................................................................................................................................33
2.13 2D ACE - display controller port....................................................................................................................................35
2.13.1 Programming display control unit......................................................................................................................35
2.14 I2C...................................................................................................................................................................................36
2.15 SPI interface....................................................................................................................................................................37
2.16 SDHC interface...............................................................................................................................................................38
2.17 Interrupt controller..........................................................................................................................................................39
2.18 Event pins....................................................................................................................................................................... 41
2.19 Serial ports...................................................................................................................................................................... 41
2.20 Audio port.......................................................................................................................................................................42
2.21 JTAG port....................................................................................................................................................................... 43
2.22 GPIO pins....................................................................................................................................................................... 44
2.23 Monitoring LEDs............................................................................................................................................................44
2.24 MBED.............................................................................................................................................................................45
Chapter 3
Expansion Headers and Ports
3.1 K22 expansion (internal).................................................................................................................................................47
3.2 Audio expansion (internal)............................................................................................................................................. 48
3.3 Arduino expansion (internal).......................................................................................................................................... 48
3.4 Rear panel expansion ports (external).............................................................................................................................50
QorIQ LS1021A-IOT Gateway Reference Design Board Reference Manual, Rev. 0, 03/2015
4 Freescale Semiconductor, Inc.