pca9512a NXP Semiconductors, pca9512a Datasheet - Page 9

• Manufacturer Part Number: pca9512a
• Description: Pca9512a Level Shifting Hot Swappable I2c-bus And Smbus Bus Buffer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PCA9512A_1
Product data sheet
Fig 7. Hot swapping multiple I/O cards into a backplane using the PCA9512A in a cPCI, VME, and AdvancedTCA
BD_SEL
V
Remark: Application assumes bus capacitance within ‘proper operation’ region of
system
SDA
10 k
V
SCL
CC2
CC
R1
BACKPLANE
R2
10 k
CONNECTOR
BACKPLANE
Rev. 01 — 7 October 2005
Level shifting hot swappable I
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
R3
5.1
R7
5.1
R11
5.1
HOT SWAP
HOT SWAP
HOT SWAP
C2
C4
C6
0.01 F
0.01 F
0.01 F
PCA9512A
PCA9512A
PCA9512A
V
SDAIN
SCLIN
V
SDAIN
SCLIN
V
SDAIN
SCLIN
CC
CC
CC
I/O PERIPHERAL CARD N
I/O PERIPHERAL CARD 1
I/O PERIPHERAL CARD 2
V
V
V
GND
GND
GND
CC2
CC2
CC2
SDAOUT
SDAOUT
SDAOUT
SCLOUT
SCLOUT
SCLOUT
Figure 5
C1
0.01 F
C3
0.01 F
C5
0.01 F
ACC
ACC
ACC
2
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
C-bus and SMBus bus buffer
and
R4
10 k
R8
10 k
R12
10 k
Figure
R5
10 k
R9
10 k
R13
10 k
PCA9512A
6.
R6
10 k
R10
10 k
R14
10 k
CARD1_SDA
CARD1_SCL
CARD2_SDA
CARD2_SCL
CARDN_SDA
CARDN_SCL
002aab791
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