Dual DP83640 Ethernet PHY HSMC Daughter Board
Reference Guide
V1.0 - October 2013
14
7 High Speed Mezzanine Card (HSMC) Connector
The connector used in HSMC applications is a custom version of the 0.5mm-pitch QTH-DP
and mating QSH-DP series from Samtec, Inc. There are three “banks” in this connector. Bank
1 will have every third pin removed as is done in the QSH-DP/QTH-DP series. Bank 2 and
Bank 3 have all of the pins populated as done in the QSH/QTH series. The default mating
connector is the ASP-122952-02. The ASP-122952-01 connector can plug directly into hosts
with QSH-060-01-L-D-DP or QSH-060-01-L-D connectors with the –DP version having slightly
better signal integrity.
Figure 7: Samtec ASP - 122952 - 01
7.1 HSMC Connector Pin out Table
Table 4 shows for every pin of the HSMC connector on the board and the corresponding PHY
signal. The signal suffix "_0" indicates PHY1 and "_1" indicates PHY2. Unused pins are left blank.
Table 5: HSMC Connector Pin out
HSMC
Pin
Function
Bank No
Function
HSMC
Pin
1
HSMC
BANK 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
