pca9511a NXP Semiconductors, pca9511a Datasheet - Page 10

• Manufacturer Part Number: pca9511a
• Description: Hot Swappable I2c-bus And Smbus Bus Buffer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 13269
Product data sheet
Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9511A in a PCI system
Fig 9. Repeater/bus extender application using the PCA9511A
System 1
to other
devices
SDA
SCL
V
CC
10 k
V
BACKPLANE
CC
Remark: See Application Note AN255, ‘I2C repeaters, hubs, and expanders’ for more information on other devices better
optimized for long distance transmission of the I
R1
SDA1
SCL1
= 5 V
10 k
R1
R2
10 k
10 k
R4
CONNECTOR
BACKPLANE
ENABLE
SDAIN
SCLIN
I
2
C-bus System 1
GND
V
CC
SDAOUT
SCLOUT
READY
C1
0.01 F
Rev. 01 — 15 August 2005
R5
10 k
2
C-bus or SMBus.
distance
R2
1 k
C2
0.01 F
C4
0.01 F
1 k
long
bus
R3
ENABLE
SDAIN
SCLIN
ENABLE
SDAIN
SCLIN
10 k
Hot swappable I
R6
I/O PERIPHERAL CARD 1
I/O PERIPHERAL CARD 2
GND
GND
V
V
0.01 F
SDAOUT
SCLOUT
READY
CC
CC
I
2
C2
C-bus System 2
SDAOUT
SDAOUT
SCLOUT
SCLOUT
READY
READY
C1
0.01 F
C3
0.01 F
GND
V
CC
ENABLE
SDAIN
SCLIN
2
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
C-bus and SMBus bus buffer
R4
10 k
R8
10 k
R5
10 k
R9
10 k
PCA9511A
R7
10 k
R6
10 k
R10
10 k
CARD1_SDA
CARD1_SCL
CARD2_SDA
CARD2_SCL
R8
10 k
V
SDA1
SCL1
CC
002aab585
to other
System 2
devices
002aab586
10 of 23