Artesyn RTM ATCA-F140 Installation and Use (July 2014) - Manual (Page 44)

Functional Description
RTM-ATCA-F140 Installation and Use (6806800M97F) 44
4.5.7 PHY Management Interfaces
The BCM84754 provides a single MDC/MDIO management port to access all four channels and
allows bits 0 and 1 of the PHY address for each channel to be individually programmed, with
bits 2 - 4 being common.Table 9 shows the address allocation and management port definition
for each channel.
4.6 40Gbps Fabric Ports
The RTM-ATCA-F140 provides a 40Gbps capable QSFP+ module site connected to the fabric
switch on the front blade.
4.6.1 Fabric Connectivity
One 40GbE port from the front blade fabric switch connects to a BCM84740 quad XLAUI-to-SFI
PHY which then connects to a single QSFP+ connector using an SFI interface as shown in
Figure
4-5Fabric 40Gb Interconnect . When the fabric switch is configured for XLAUI mode, the QSFP+
slot supports a single 40GbE logical connection. When the fabric switch is configured for 4x XFI
mode, the QSFP+ slot supports four 10GbE connections. This mode assumes the use of a fiber
breakout cable on the QSFP+ module (MPO to 4x LC cable). The RTM-ATCA-F140 includes
Table 4-8 BCM84754 PHY Addressing
PHY
Address
High Bits Channel
Source
PHY
Address
Low Bits
PHY
Address Switch
Port SFP+
Port
Management Channel
b001 0 Fabric b00 4 FIX_P15
Lane 0 Fabric
SFP+ 4 FIX_XG_MDC2/ MDIO2
1 Fabric b01 5 FIX_P15
Lane 1 Fabric
SFP+ 3
2 Fabric b10 6 FIX_P15
Lane 2 Fabric
SFP+ 2
3 Fabric b11 7 FIX_P15
Lane 3 Fabric
SFP+ 1