User Manual

GAMMA instabus

Release: February 2012

KNX EIB TP-UART 2-IC

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Infrastructure and Cities Sector,

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Control Products and Systems © Siemens AG 2012 page 41

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5 C3 As close as possible to VCC and GND 3

6 CBYP As close as possible to BYP and VB+ 2

7 C6 As close as possible to VSP and GND 2

8 Y1 As close as possible to X1 and X2

Embed Y1 (crystal) and its connections on the

component side in GND

Place on next layer below Y1 a GND area.

9 TP-UART 2

Ground plane on component side and below

TP-UART 2 has to be designed. Four vias are

necessary.

Table 27 Layout Guidelines

Figure 12 Layout Top-/Bottom View