PX1011A_PX1012A_2 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet Rev. 02 — 18 May 2006 22 of 32
Philips Semiconductors
PX1011A/PX1012A
PCI Express stand-alone X1 PHY
[1] Reference voltage for SSTL_2 class I I/O.
Table 19. PXPIPE characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
RXCLK
RXCLK frequency 249.925 250 250.075 MHz
f
TXCLK
TXCLK frequency 249.925 250 250.075 MHz
V
VREFS
voltage on pin VREFS
[1]
- 1.25 - V
V
OH(SSTL2)
SSTL_2 HIGH-level output voltage V
TT
= 1.25 V 1.82 - - V
V
OL(SSTL2)
SSTL_2 LOW-level output voltage V
TT
= 1.25 V - - 0.68 V
V
IH(SSTL2)
SSTL_2 HIGH-level input voltage V
TT
= 1.25 V 1.63 - - V
V
IL(SSTL2)
SSTL_2 LOW-level input voltage V
TT
= 1.25 V - - 0.87 V
Input signals; measured with respect to TXCLK
t
su(TX)(PXPIPE)
setup time of PXPIPE input signal see Figure 17 500 - - ps
t
h(TX)(PXPIPE)
hold time of PXPIPE input signal see Figure 17 500 - - ps
Output signals; measured with respect to RXCLK
t
su(RX)(PXPIPE)
setup time of PXPIPE output signal see Figure 17 1500 - - ps
t
h(RX)(PXPIPE)
hold time of PXPIPE output signal see Figure 17 1500 - - ps
Fig 17. Definition of PXPIPE timing
PXPIPE
INPUT
TXCLK
PXPIPE
OUTPUT
RXCLK
t
h(RX)(PXPIPE)
t
su(RX)(PXPIPE)
t
h(TX)(PXPIPE)
t
su(TX)(PXPIPE)
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