Datasheet

SDI Input and SDO Output

The SDI input connector (J1) is a 75Ω BNC connector. The SDI input should conform to the SMPTE 424M,

SMPTE 292M, or SMPTE 259M standards.

The SDO0 and SDO1 output connectors (J2, J3, J4, and J5) are 50Ω SMA connectors. The SDO0 and SDO1

output connectors have onboard 4.7uF AC coupling capacitors (C3, C7, C17, and C18). When using only one side

of an output pair, the other side should be terminated with a 50Ω SMA termination. For example, when only using

the SDO0 output, SDO0

¯¯¯¯¯

should be terminated with a 50Ω SMA termination.

DC Power Connectors

The VCC and GND power connectors, PS1 and PS2 respectively, should be powered with a DC input voltage of

2.5V ± 5%.

SPI Mode / Pin Mode Select (JP6 – JP9)

JP6, JP7, JP8, and JP9 are used to select between SPI Mode or Pin Mode. To select Pin Mode, set these jumpers

in the down position as shown in Figure 2. To select SPI Mode, set these jumpers in the up position as shown in

Figure 3. For proper operation, either Pin Mode or SPI Mode must be selected. Do not leave JP6-JP9 open.

FIGURE 2. Pin Mode Select

FIGURE 3. SPI Mode Select

MUTE

REF

(JP5)

JP5 allows control of the MUTE

REF

function and may be used in either Pin Mode or SPI Mode. MUTE

REF

is an

input voltage used to set the threshold for CD

¯¯¯

. The MUTE

REF

DC input voltage should be between 0V and 2.5V.

Refer to the LMH0395 datasheet for details. Leave JP5 unconnected for normal operation.

SDO1_ENABLE (JP10)

JP10 allows control of the SDO1_DISABLE function and may be used in either Pin Mode or SPI Mode. When this

jumper is set, the SDO1 output is enabled. When this jumper is removed, the SDO1 output is disabled (high

impedance).

SD395 EVK User Guide 2 of 8