Datasheet

SP
t
BUF
t
HD:STA
t
LOW
t
R
t
HD:DAT
t
HIGH
t
F
t
SU:DAT
t
SU:STA
ST
SP
t
SU:STO
SCL
SDA
ST
IN
OUT
+
-
t
IDLE-DATA
+
-
t
DATA-IDLE
DATA
IDLE
0V
0V
DATA
IDLE
IN
0V
t
PLHD
OUT
0V
t
PHLD
+
-
+
-
DS80PCI800
www.ti.com SNLS334E –APRIL 2011–REVISED MARCH 2012
Figure 3. Propagation Delay Timing Diagram
Figure 4. Transmit IDLE-DATA and DATA-IDLE Response Time
Figure 5. SMBus Timing Parameters
Functional Descriptions
The DS80PCI800 is a low power 8 channel repeater optimized for PCI Express Gen 1/2 and 3. The DS80PCI800
compensates for lossy FR-4 printed circuit board backplanes and balanced cables. The DS80PCI800 operates in
3 modes: Pin Control Mode (ENSMB = 0), SMBus Slave Mode (ENSMB = 1) and SMBus Master Mode (ENSMB
= float) to load register informations from external EEPROM; please refer to SMBUS Master Mode for additional
information.
Pin Control Mode:
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