DC and Switching Characteristics
Table 4–6. Arria GX Transceiver Block AC Specification (Part 3 of 4)
-6 Speed Grade Commercial and
Industrial
Symbol / Description
Conditions
Unit
Min
Typ
Max
CDR LTR TIme (8), (9)
-
-
-
75
-
us
us
CDR Minimum T1b (9),
15
(10)
LTD lock time (9), (11)
0
-
100
-
4000
4
ns
us
Data lock time from
rx_freqlocked(9),
(12)
Programmable DC gain
0, 3, 6
dB
Transmitter Buffer
Output Common Mode
voltage (Vocm)
Vocm = 0.6 V setting
Vocm = 0.7 V setting
580 10%
680 10%
108 10%
mV
mV
Ω
On-chip termination
resistors
50 MHz to 1.25 GHz (PCI
Express)
-10
-6
dB
Return loss differential
mode
312 MHz to 625 MHz (XAUI)
Return loss common
mode
50 MHz to 1.25 GHz (PCI
Express)
dB
Rise time
Fall time
35
35
-
-
-
-
65
65
15
ps
ps
ps
Intra differential pair
skew
VOD = 800 mV
Intra-transceiver block
-
-
100
ps
skew (×4) (13)
Transmitter PLL
VCO frequency range
500
-
1562.5
-
MHz
MHz
BW = Low
BW = Med
BW = High
BW = Low
BW = Med
BW = High
3
5
9
1
2
4
-
Bandwidth at 3.125
Gbps
-
MHz
us
Bandwidth at 2.5 Gbps
TX PLL lock time from
gxb_powerdown
deassertion (9), (14)
-
100
Altera Corporation
May 2008
4–7
Arria GX Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
