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A.2.4 baseband interface requirements, Byte – Comtech EF Data SDM-9000 User Manual

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SDM-9000 Satellite Modem

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Rev. 4

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A.2.4 Baseband Interface Requirements

A.2.4.1 Timing for Transmit Baseband Interface

A diagram of the timing for the transmit baseband interface is shown in Figure A-10.

Figure A-10. Timing for Transmit Baseband Interface

Parameters for TX baseband interface timing are presented in Table A-2.

Table A-2. TX Baseband Interface Timing

Parameter

Description

Min

t

su

Setup time, DATA or SYNC to CLOCK

8 ns

t

h

Hold time, CLOCK to DATA or SYNC invalid

2 ns

t

cl

CLOCK low duration

8 ns

t

ch

CLOCK high duration

8 ns

Note: SYNC is only required in DBS mode (204

-byte

packets).