T1024 datasheet(16/49 Pages) FREESCALE

16 / 49 page

Although the platforms support all types, ranks, and speeds of DIMMs, but not all the

combinations of these three exist in the memory market. Hence, the system is shipped

with a “representative” DIMM, as noted in the below table. Other suitable memory

DIMMs can be purchased and installed if needed. However, Freescale only supplies the

device shown in the below table.

Table 2-1. Freescale supported DIMM

Platform

Type

Speeds

Ranks

DIMM

T1024RDB

DDR3L

1600 MT/s

Dual

Micron MT18KSF51272AZ-1G6K1

4GB, x72, CL=10

2.7 SerDes port

The T1024 SerDes block provides a four high-speed serial communication lanes,

supporting a variety of protocols, including:

• XFI 1X 10.3125G bit/s

• PCI Express (PEX) Gen 1 1X 2.5 Gbit/s

• PCI Express (PEX) Gen 2 1X 5 Gbit/s

• SGMII 2.5G bit/s

An overview of the SerDes protocols supported on the T1024RDB is shown in Table 2-2.

Table 2-2. SerDes protocols

SRDS_PRT

CL_S1

EC1

EC2

Per lane PLL mapping

0X095

XFI1(MAC1) PEXc x1 PEXb x1

PEXa x1

RGMII

(MAC4)

RGMII

(MAC3)

1222

0X135

Aurora

2.5

SGMII

(MAC3)

PEXb x1

PEXa x1

RGMII

(MAC4)

N/A

1211

To comply with the T1024 application, some multiplexers are used to re-route and group

the SerDes lanes as shown in the below figure.

SerDes port

QorIQ T1024 Reference Design Board User Guide, Rev. 0, 04/2015

Freescale Semiconductor, Inc.

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