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PCA9512A_1
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 7 October 2005
9 of 22
Philips Semiconductors
PCA9512A
Level shifting hot swappable I2C-bus and SMBus bus buffer
Remark: Application assumes bus capacitance within ‘proper operation’ region of Figure 5 and Figure 6.
Fig 7.
Hot swapping multiple I/O cards into a backplane using the PCA9512A in a cPCI, VME, and AdvancedTCA
system
002aab791
R4
10 k
Ω
C1
0.01
µF
SDAOUT
SCLOUT
ACC
VCC2
GND
R5
10 k
Ω
R6
10 k
Ω
VCC
SDAIN
SCLIN
POWER SUPPLY
HOT SWAP
CARD1_SDA
CARD1_SCL
I/O PERIPHERAL CARD 1
BACKPLANE
CONNECTOR
R2
10 k
Ω
R1
10 k
Ω
VCC2
BACKPLANE
BD_SEL
SDA
SCL
VCC
R3
5.1
Ω
C2
0.01
µF
PCA9512A
R8
10 k
Ω
C3
0.01
µF
SDAOUT
SCLOUT
ACC
VCC2
GND
R9
10 k
Ω
R10
10 k
Ω
VCC
SDAIN
SCLIN
POWER SUPPLY
HOT SWAP
CARD2_SDA
CARD2_SCL
I/O PERIPHERAL CARD 2
R7
5.1
Ω
C4
0.01
µF
PCA9512A
R12
10 k
Ω
C5
0.01
µF
SDAOUT
SCLOUT
ACC
VCC2
GND
R13
10 k
Ω
R14
10 k
Ω
VCC
SDAIN
SCLIN
POWER SUPPLY
HOT SWAP
CARDN_SDA
CARDN_SCL
I/O PERIPHERAL CARD N
R11
5.1
Ω
C6
0.01
µF
PCA9512A
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