GENNUM EB-GS2985-S, Руководство пользователя

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EB-GS2985-S
Evaluation Board User Guide
52246 - 2
July 2009
8 of 25
1.6 GS2988 CD Control I/O
A switch (SW2) and a jumper (RSET_SEL) facilitate the manual configuration of the
GS2988 Cable Driver on the EB-GS2985-S evaluation board. These are described in the
tables below.
Table 1-5: SW3 Positions
Switch Position Label Description HIGH (1) LOW (0) Default
1 GS Gain Select Compensation for
6dB flat attenuation
No change in gain 0
2 BP Bypass Bypass On Bypass Off 0
3 CM Common Mode Set
NOTE: CM should be
set to 1 when using
a 2.5V supply for the
Reclocker.
Output CM set to
2.1V
Output CM set to
2.9V
0
Table 1-6: MUTE Select (MUTE_SEL)
Label Connection Description
AUTO (default) Auto Mute
HI Mute On
LO Mute Off
Table 1-7: SW2 Positions
Switch Position Label Description HIGH (1) LOW (0) Default
1 EQ Input trace
e q ualization
Input trace
e q ualization Off
Input trace
e q ualization On
1
2 DIS Output disable Output 1 enabled Output 1 disabled 1