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AT8904M Hardware Description

Page 3 - 9 AT8904M User Guide

3.1.3 Fabric Switch Interface

The main board provides connection for the mezzanine board allowing various technologies for

the backplane fabric interface and AMC fabric interfaces.

The 10GbE option of the AT8904M provided by the mezzanine is described in section 3.2.

The connection interface to the mezzanine consists of three 220 pin high speed connectors.

3.1.4 AMC Bays

Two AMC bays for standard or custom AMCs mid-size and single width are implemented with

B+ connectors, which are compliant to the AMC.0 R1.0 specification.

Following AMC Geographic Addresses are implemented:

Table 3-9: AMC Bay Address

The state of each GA signal is represented by G (grounded), U (unconnected) or P (pulled up

to management power).

AMC AMC Bay ID GA [2..0] IPMB-L Address

1B1 UGU 7Ah

2 B2 UUG 7Ch

Table 3-10: AMC B1 Channel Assignment

Channel Region Connection

0 GbE Local Base Switch 0/21

1 GbE Remote Base Switch 0/22

2 SATA/FC AMC B2, channel 2

3 SATA/FC RTM, STOR0

4 Fabric 10GbE Uplink 0/27[0]

5 Fabric 10GbE Uplink 0/27[1]

6 Fabric 10GbE Uplink 0/27[2]

7 Fabric 10GbE Uplink 0/27[3]

8 Fabric 10GbE Uplink 0/28[0]

9 Fabric 10GbE Uplink 0/28[1]

10 Fabric 10GbE Uplink 0/28[2]

11 Fabric 10GbE Uplink 0/28[3]

12 Extended -

13 Extended RTM, AMC_B1_P13

14 Extended RTM, AMC_B1_P14

15 Extended RTM, AMC_B1_P15

17 Extended RTM, AMC_B1_P17

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