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7 gps connectors, 8 fpga, 1 front-blade interface – Artesyn RTM ATCA-F140 Installation and Use (July 2014) User Manual

Page 48: 7 gps connectors 4.8 fpga, Chapter 4, Chapter 4, gps connectors, Functional description

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Functional Description

RTM-ATCA-F140 Installation and Use (6806800M97F)

48

4.7

GPS Connectors

The 1PPS, 10MHz, and TOD inputs for connection to an external GPS receiver are not
supported currently.

4.8

FPGA

The RTM-ATCA-F140 includes a Xilinx XC3S200A-4 FPGA that which performs the following
functions:

Access to control and status signals on SFP, SFP+, and QSFP+

Access to control and status signals on the BCM8727, BCM84754, and BCM84740

Reset handling

SPI Flash programmer and multiplexing for BCM8727, BCM84754, and BCM84740
configuration

UART with selectable outputs for the optional GPS receiver (functionality not initially
implemented)

4.8.1

Front-blade Interface

The RTM-ATCA-F140 includes an SPI interface between the front-blade service processor and
the RTM FPGA. There is also an active low interrupt line to the front-blade to request service.

1

Fabric

b01

1

FIX_P14
Lane 1

2

Fabric

b10

2

FIX_P14
Lane 2

3

Fabric

b11

3

FIX_P14
Lane 3

Table 4-10 BCM84740 PHY Addressing (continued)

PHY
Address
High Bits

Channel

Source

PHY
Address
Low Bits

PHY
Address

Switch Port

QSFP+
Port

Management
Channel