Datasheet

PCA9513A_PCA9514A_4 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 04 — 18 August 2009 12 of 26
NXP Semiconductors
PCA9513A; PCA9514A
Hot swappable I
2
C-bus and SMBus bus buffer
Fig 10. Hot swapping multiple I/O cards into a backplane using the PCA9514A 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
V
CC
>V
CC_LOW
.
R
drop
is the line loss of V
CC
in the backplane.
Fig 11. System with disparate V
CC
voltages
002aab587
R4
10 kΩ
C2
0.01 µF
SDAOUT
SCLOUT
READY
V
CC
GND
ENABLE
SDAIN
SCLIN
R1
10 kΩ
V
CC
SDA
SCL
R5
10 kΩ
R
drop
V
CC_LOW
R2
10 kΩ
R3
10 kΩ
SDA2
SCL2