Rohde & Schwarz SMM-K507, User Manual, Page: 40 / 51

I/Q over Ethernet (QSFP+) protocol
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®
SMM-K507
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A.1.4 ACK frame
The acknowledgement (ACK) frame carries 64-bit information divided into three frame
fields.
Figure A-2 displays the frame composition and Table A-2 describes frame field
bit information.
Figure A-2: ACK frame and frame fields
Table A-2: Bit number and ACK frame field
Bit number ACK frame fields
[0:15] Reserved (Default value: 0x0200)
[16:31] Error code (OK = 0x0000)
[32:63] Additional state/info field
The UDP payload is 18 bytes in total. This implementation ignores the last 10 bytes.
A.1.5 Control and data frame types
This chapter provides information on control frames and data frames. The information
includes the frame types and names, payload, frame field information and require-
ments.
A.1.5.1 Control frame
There are five types of control frames, see Table A-3 .
UDP/IP protocol stack