TR5-Lite User Manual
58
June 20, 2018
CDCM61004
The TR5-Lite includes another programmable PLL CDCM61004. The CDCM61004 supports
output frequency range from 43.75 MHz to 683.264 MHz. It provides a parallel interface for
selecting a desired output frequency. The Stratix V GX FPGA's IOs connect to the interface directly.
The differential clock outputs of the CDCM61004 are designed for SFP+ and SATA applications on
TR5-Lite board.
When CDCM61004 is powered on, the default output frequency is 100 MHZ. Users can change the
output frequency by the following control pins:
1.
PR0 and PR1
2.
OD0, OD1, and OD2
3.
RSTN
4.
CE
5.
OS0 and OS1
The following table lists the frequency which CDCM61004 can generate in TR5-Lite.
PRESCALLR
DIVIDER
FEEDBACK
DIVIDER
OUTPUT
DEVIDER
OUTPUT
FREQUENCY(MHz)
APPLICATION
4
20
8
62.5
GigE
3
24
8
75
SATA
3
24
6
100
PCI Express
4
20
4
125
GigE
3
24
4
150
SATA
3
25
4
156.25
10 GigE
5
15
2
187.5
12 GigE
3
24
3
200
PCI Express
4
20
2
250
GigE
4
20
2
312.5
XGMII
3
25
1
625
10 GigE
The both values of PRESCALER DIVIDER and FEEDBACK DIVIDER can be specified by the
PR0 and PR1 control pins according to the following table:
Содержание TR-5 Lite FPGA
Страница 1: ...TR5 Lite User Manual 1 www terasic com June 20 2018...
Страница 71: ...TR5 Lite User Manual 71 www terasic com June 20 2018 Figure 5 9 CDCM 61004 Demo Figure 5 10 Si570 Demo...
Страница 85: ...TR5 Lite User Manual 85 www terasic com June 20 2018 Figure 7 5 Transceiver Loopback Test in Progress...