1 skp_timer, Skp_timer – Teledyne LeCroy Voyager Exerciser Generation Script Language Manual User Manual
Page 151
Teledyne LeCroy
Voyager USB 3.0 Exerciser Generation Script Language Reference Manual
142
0x021C
User can insert a delay between U1 entry and the first Ping
in U1 state. Each value will be multiplied by 8ns in
hardware. For example, to insert 100ms delay before
sending the first ping in U1 user should write this value
0x0BEBC20 in this register
LTSSM_DELAY_BEFOR
E_U1
0x0220
Count of 8ns intervals to configure wait before U1 periods start
GENERATE_LFPS_COMM
AND
0x0340
See Below
12.1.1 SKP_TIMER
(Offset in the Register Area: 0x0014)
This register controls the behavior of SKP generator. The SKP generator can work automatically or based
on the interval time programmed by user through this command. In addition, it permits to control the
number of pending SKP requests before trying to send them.
MSB
LSB
Timer
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
M.A
TS1
Pnd Cnt
Reserved
Auto
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Location
Register Description
0
AUTO
0: Use the interval time programmed in Interval field, 1: Use
automatic timing for SKP intervals
7:1
Reserved, filled by 0
9:8
Pnd Cnt
Number of pending SKP requests before sending a SKP
sequence.
0: Don’t keep any pending SKP request, send them out
whenever there is any.
1: Keep 1 request. Send SKP sequence when there are at
least 2 requests.
2: Keep 2 requests. Send SKP sequence when there are at
least 3 requests.
3: Keep 3 requests. Send SKP sequence when there are 4
requests.
10
TS1
1: Send SKP sequence before first TS1 OrderedSet in
Polling.Active and Recovery.Active
0: Normal behavior, send SKP sequences on the schedule
during TS1 transmission; no need to send a SKP sequence
before TS1s
11
Misaligned Interval
When this bit is set the interval is misaligned.