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Chapter 7: GTP Receiver (RX)
Example
Table 7-7
Table 7-7: Example Clock Generation Settings for SATA
Parameter
CLKIN (MHz)
OOB_CLK_DIVIDER
Squelch Clock (MHz)
Effective Sample Period (ns)
Table 7-8
lengths, along with example calculations based on the squelch clock frequencies computed
in
Table 7-8: Example SATA Attribute Settings
Parameter
Shortest Burst width that must be rejected
MinBurstWidth
Shortest Burst width that must be accepted
Nominal Burst length
Longest Burst width that must be accepted
MaxBurstWidth
Longest Burst width that must be rejected
Shortest idle width that must be rejected for
COMINIT
MinInitWidth
Shortest idle width that must be accepted for
COMINIT
Nominal idle width for COMINIT
Longest idle width that must be accepted for
COMINIT
MaxInitWidth
Longest idle width that must be rejected for
COMINIT
Shortest idle width that must be rejected for
COMWAKE
MinWakeWidth
Shortest idle width that must be accepted for
COMWAKE
Nominal idle width for COMWAKE
134
shows some example settings for the squelch clock divider.
Example 1
Example 2
25
1
25
20
13.33333333
shows all the minimum and maximum values defined in SATA for burst and idle
Table
7-7.
ns
55
101
107
112
175
175
304
320
336
525
55
101.3
106.7
www.xilinx.com
Example 3
Example 4
75
100
2
4
37.5
25
20
cycles
cycles
cycles
2.8
4.1
2.8
4
6
4
5.1
7.6
5.1
5.3
8.0
5.3
5.6
8.4
5.6
7
11
7
8.8
13.1
8.8
8.8
13.1
8.8
12
18
12
15.2
22.8
15.2
16.0
24.0
16.0
16.8
25.2
16.8
22
32
22
26.3
39.4
26.3
2.8
4.1
2.8
4
6
4
5.1
7.6
5.1
5.3
8.0
5.3
Virtex-5 RocketIO GTP Transceiver User Guide
Example 5
Example 6
150
250
6
10
25
25
21.42857143
20
20
23.33333333
cycles
cycles
cycles
2.8
2.8
2.357142857
4
4
5.1
5.1
4.341428571
5.3
5.3
4.572857143
5.6
5.6
7
7
8.8
8.8
8.8
8.8
12
12
15.2
15.2
13.02857143
16.0
16.0
13.71428571
16.8
16.8
22
22
26.3
26.3
2.8
2.8
2.357142857
4
4
5.1
5.1
4.341428571
5.3
5.3
4.572857143
UG196 (v1.3) May 25, 2007
R
300
14
3
4.8
6
7.5
7.5
10
14.4
18
22.5
3
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