GS2985 Datasheet, PDF (14/45 Pages) Gennum Corporation – Uses standard 27MHz crystal

3. Input/Output Circuits
VCC
DDI
VCC
5.55kΩ
12.96kΩ
25Ω
25Ω
25Ω
VCC
25Ω
DDI
Figure 3-1: High-speed Inputs (DDI0, DDI0, DDI1, DDI1, DDI2, DDI2, DDI3, DDI3)
VCC
2.5µA
VCC
1.4kΩ
IN
VREF
Figure 3-2: Low-speed Input with weak internal pull-up (HIF, RSVD,
AUTO/MAN, DDO1_DISABLE, DATA_MUTE)
GS2985 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
36663 - 5
July 2012
14 of 45
Proprietary & Confidential