Timing Specifications
Table 5–49. Mini-LVDS Transmitter Timing Specification (Part 2 of 2)
–6 Speed Grade
–7 Speed Grade
–8 Speed Grade
Symbol
Conditions
Unit
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Device
operation
in Mbps
×10
×8
×7
×4
×2
×1
—
100
80
70
40
20
10
45
—
—
—
—
—
—
—
—
—
—
311
311
311
311
311
311
55
100
80
70
40
20
10
45
—
—
—
—
—
—
—
—
—
—
311
311
311
311
311
311
55
100
80
70
40
20
10
45
—
—
—
—
—
—
—
—
—
—
311
311
311
311
311
311
55
Mbps
Mbps
Mbps
Mbps
Mbps
Mbps
%
tDUTY
TCCS
—
200
500
200
500
200
500
ps
Output
—
—
—
—
ps
jitter (peak
to peak)
tRISE
tFALL
tLOCK
20–80%
80–20%
—
—
—
—
—
—
500
500
100
—
—
—
—
—
—
500
500
100
—
—
—
—
—
—
500
500
100
ps
ps
μs
In order to determine the transmitter timing requirements, mini-LVDS
receiver timing requirements on the other end of the link must be taken
into consideration. The mini-LVDS receiver timing parameters are
typically defined as tSU and tH requirements. Therefore, the transmitter
timing parameter specifications are tCO (minimum) and tCO (maximum).
Refer to Figure 5–4 for the timing budget.
The AC timing requirements for mini-LVDS are shown in Figure 5–6.
Figure 5–6. mini-LVDS Transmitter AC Timing Specification
TUI
LVDSCLK[]n
LVDSCLK[]p
t
(1)
t
(2)
t
(1)
t (2)
H
SU
H
SU
LVDS[]p
LVDS[]n
Notes to Figure 5–6:
(1) The data setup time, tSU, is 0.225 × TUI.
(2) The data hold time, tH, is 0.225 × TUI.
5–60
Altera Corporation
February 2008
Cyclone II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
