Datasheet

PCA9510A_4 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 04 — 18 August 2009 10 of 24
NXP Semiconductors
PCA9510A
Hot swappable I
2
C-bus and SMBus bus buffer
Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9510A in a PCI system
002aab585
R4
10 kΩ
C1
0.01 µF
SDAOUT
SCLOUT
READY
V
CC
GND
R5
10 kΩ
R6
10 kΩ
ENABLE
SDAIN
SCLIN
CARD1_SDA
CARD1_SCL
STAGGERED CONNECTOR
I/O PERIPHERAL CARD 1
BACKPLANE
CONNECTOR
R8
10 kΩ
C3
0.01 µF
SDAOUT
SCLOUT
READY
V
CC
GND
R9
10 kΩ
R10
10 kΩ
ENABLE
SDAIN
SCLIN
CARD2_SDA
CARD2_SCL
STAGGERED CONNECTOR
I/O PERIPHERAL CARD 2
R2
10 kΩ
R1
10 kΩ
V
CC
BACKPLANE
SDA
SCL
C4
0.01 µF
C2
0.01 µF
Remark: See Application Note AN255, ‘I
2
C repeaters, hubs, and expanders’ for more information on other devices better
optimized for long distance transmission of the I
2
C-bus or SMBus.
Fig 9. Repeater and bus extender application using the PCA9510A
002aab586
R7
10 kΩ
C2
0.01 µF
SDAOUT
SCLOUT
READY
V
CC
GND
ENABLE
SDAIN
SCLIN
R8
10 kΩ
V
CC
SDA1
SCL1
to other
System 2
devices
I
2
C-bus System 2
R6
10 kΩ
R4
10 kΩ
C1
0.01 µF
SDAOUT
SCLOUT
READY
V
CC
GND
ENABLE
SDAIN
SCLIN
R1
10 kΩ
V
CC
= 5 V
SDA1
SCL1
to other
System 1
devices
I
2
C-bus System 1
R5
10 kΩ
long
distance
bus
R3
10 kΩ
R2
10 kΩ