• Offboard (TDM riser) device
• Onboard SLAC device access
SPI 0 is connected to the SPI EEPROM. SPI 1 and 2 are connected to the SLAC chips for
FXS voice support and SPI 3 is connected to the TDM riser card connector.
The figure below shows the overall connections of SPI.
SPI
T1040
PROC_SPI_CS0-3
PROC_SPI_MOSI/MISO_CLK
OVDD-1.8V
3.3V
SPI_MOSI/MISO_CLK
TXBN0304
(OVDD to 3.3V)
SPI_CS3
SPI_CS2
SPI_CS1
Le88266
(SLAC)
Le88266
(SLAC)
TDM Riser card connector
N25Q512A
(64MB FLASH)
SPI_CS0
Figure 2-11. SPI bus connections
2.11 Local bus
The T1040 Integrated Flash Controller (IFC), also called the local bus, supports 32-bit
addressing and 8- or 16-bit data widths, for a variety of devices. IFC lets to manage all
these resources effectively with maximum performance and flexibility. The figure below
shows an overview of the IFC bus.
Chapter 2 Architecture
QorIQ T1040 Reference Design Board User Guide, Rev. 0, 06/2015
Freescale Semiconductor, Inc. 27
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