Table 2-3. I2C Bus connections (continued)
I2C Bus
I2C Address
Manufactur
er
Device
Comment
I2C2
0x40
Linear
INA220A
12 V current measurement
I2C2
Linear
Mini PCIe 1 PCIe x1
Connector
I2C address is dependent on PCIe
card
I2C2
0x20
NXP
PCA6408APW
GPIO expander for selecting NOR
bank
2.14 IFC
The Integrated flash controller (IFC) is used to access the external NAND flash and NOR
flash. To interface with the standard memory device, an address latch is needed on the
upper address bits since they are multiplexed with the data bus. The
IFC_AVD
is used as the
latching signal. The following modules are connected to the IFC:
• 128 MB NOR flash memory
• 512 MB NAND flash memory
NOTE
Silicon IFC_NOR 28 bit addressing mode is not functional with
Asynchronous non-ADM NOR. For more details, see
A-009138: IFC_NOR 28/25 addressing mode is not functional
for T1023 with Asynchronous, Non-ADM NOR
errata
document.
2.14.1 NOR flash memory
T1023RDB-PC provides 128 MB of NOR flash memory. The flash memory used is
configured in a 16-bit port size. The NOR flash memory is divided in to 8 banks. By
default, only bank0 and bank4 are supported to swap in U-Boot by using the following
commands:
switch bank0
switch bank4
The below figure shows the hardware connections for the flash memory.
IFC
QorIQ T1023 Reference Design Board User Guide, Rev. 0, 08/2015
20
Freescale Semiconductor, Inc.
Summary of Contents for QorIQ T1023
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