GS2986 datasheet(27/41 Pages) SEMTECH

Part #	GS2986

Description	Multi-Rate SDI Reclocker with Equalization & De-emphasis

PDF	41 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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27 / 41 page

GS2986 Multi-Rate SDI Reclocker with Equalization &

De-emphasis

Data Sheet

52134 - 3

July 2012

27 of 41

4.15.7 Read Operation - Single Device

For Reading from a device the following format should be used:

Figure 4-7: Single Device Read

1. For a Read operation, the r/w bit should be set to 1.

2. The 2nd and 3rd bits are reserved and should be set to 0.

3. The R bit should always be set HIGH for a normal Read Operation.

4. Data Out at the slave SDO will appear after holding the slave SDI line HIGH for 32

cycles.

5. The 16-bit data is now available on the slave SDO line.

Detailed timing diagrams for Write and Read can be seen in Figure 4-8 and Figure 4-9.

MOSI

MISO

Command [15:0]

Data [15:0]

Command’ [15:0]

Data High 16 cycles

A[4:0]

R/W

Reset

Address

C[6:0] = 0

Chain Position

16 bit command

Data High 16 cycles

GS2986 Datasheet(PDF) 27 Page - Semtech Corporation