Functional Description
2.5.6.6 FAinfD_kfr
This test uses a number of IX_I4voil16 frames to check the loss of synchronization. The first
Info 3 frame with the FA-bit set to one looks like an i3_SFAL frame but it is a correct info 3 frame
since the receiver stays synchronous (see FAinfD_1fr).
Info 4
Info 4
FA = 1
FA = 1
Info 3
Info 3
Info 3 with FA = 1
I3_SFAL
ITD05903
Device
Settings
Result
Comments
PEB 2085 V2.3
n = any value
Fail
The PEB 2085 doesn´t handle the
code violation in bit 16 correctly.
PEB 2086 V1.1
n = 2
Pass
2.5.6.7 FAregain
This test uses I4_BASIC frames to regain the frame alignment. The protocol tester evaluates
the difference between sending the first info 4 frame until a complete info 3 frame has been
received. This period is considered as "m + 1". "m" must be specified before the test is started.
The PEB 2085 achieves always a constant value of m = 4 for regaining synchronization. The
PEB 2086 or PSB 2186 achieve synchronization after 5 or 6 frames. The actual value depends
on internal timing conditions which can not be influenced from extern. This is a result of
changes that were made to handle the iXvoil16 test case correctly. The info 4 pattern
generates the second code violation at the position of the FA bit. Around that bit position, the
state machine changes its states. As a result of that overlap, the info 3 frame is transmitted
after 5 frames or one frame later.
1
2
3
4
5
6
7
Info X
Info 4
Info 4
Info 4
Info 4
Info 4
Info 4
Info 4
Info 3
Info 3
ITD05904
Semiconductor Group
97
INFINEON [ Infineon ]
