pca9513a NXP Semiconductors, pca9513a Datasheet

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pca9513a

Manufacturer Part Number
pca9513a
Description
Hot Swappable I2c-bus And Smbus Bus Buffer
Manufacturer
NXP Semiconductors
Datasheet

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1. General description
2. Features
The PCA9513A and PCA9514A are hot swappable I
I/O card insertion into a live backplane without corrupting the data and clock buses.
Control circuitry prevents the backplane from being connected to the card until a stop
command or bus idle occurs on the backplane without bus contention on the card. When
the connection is made, the PCA9513A and PCA9514A provides bidirectional buffering,
keeping the backplane and card capacitances isolated.
Rise time accelerator circuitry allows the use of weaker DC pull-up currents while still
meeting rise time requirements. The PCA9513A and PCA9514A incorporates a digital
ENABLE input pin, which enables the device when asserted HIGH and forces the device
into a Low current mode when asserted LOW, and an open-drain READY output pin,
which indicates that the backplane and card sides are connected together (HIGH) or not
(LOW).
The PCA9513A supplies a 92 A current source to SCLIN and SDAIN pins in lieu of using
pull-up resistors which is ideal for multidrop bus applications. Including the current source
in the device provides for a consistent RC time constant as cards are removed and
inserted into the backplane. The current source is high-impedance whenever the pin
voltage is greater than the part V
The PCA9513A and PCA9514A rise time accelerator threshold is 0.8 V to provide better
noise margin over the PCA9511A which is set to 0.6 V.
Remark: The dynamic offset design of the PCA9510A/11A/12A/13A/14A I/O drivers allow
them to be connected to another PCA9510A/11A/12A/13A/14A device in series or in
parallel and to the A side of the PCA9517. The PCA9510A/11A/12A/13A/14A cannot
connect to the static offset I/Os used on the PCA9515/15A/16/16A/18 or PCA9517 B side
or P82B96 Sx/y side.
PCA9513A; PCA9514A
Hot swappable I
Rev. 01 — 11 October 2005
Bidirectional buffer for SDA and SCL lines increases fanout and prevents SDA and
SCL corruption during live board insertion and removal from multi-point backplane
systems
Compatible with I
Built-in V/ t rise time accelerators on all SDA and SCL lines (0.8 V threshold)
Rise time accelerator threshold moved from 0.6 V to 0.8 V for improved noise margin
Active HIGH ENABLE input
Active HIGH READY open-drain output
High-impedance SDAn and SCLn pins for V
2
C-bus Standard mode, I
2
C-bus and SMBus bus buffer
CC
.
2
C-bus Fast mode, and SMBus standards
CC
= 0 V
2
C-bus and SMBus buffers that allow
Product data sheet

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pca9513a Summary of contents

Page 1

... The PCA9513A supplies current source to SCLIN and SDAIN pins in lieu of using pull-up resistors which is ideal for multidrop bus applications. Including the current source in the device provides for a consistent RC time constant as cards are removed and inserted into the backplane ...

Page 2

... Package mark Name PCA9513AD PA9513A SO8 PCA9514AD PA9514A SO8 PCA9513ADP 9513A TSSOP8 PCA9514ADP 9514A TSSOP8 [1] Also known as MSOP8. PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable I PCA9510A PCA9511A PCA9512A PCA9513A PCA9514A yes yes = 0 V yes yes CC - yes - - - - yes yes - - in only yes - - Description plastic small outline package ...

Page 3

... VOLTAGE CUT-OFF SDAIN 92 A OVER- VOLTAGE CUT-OFF SCLIN 0.55V / CC 0.45V CC UVLO ENABLE Fig 1. Block diagram of PCA9513A PCA9513A_PCA9514A_1 Product data sheet Hot swappable SLEW RATE DETECTOR BACKPLANE-TO-CARD CONNECTION CONNECT 2 mA SLEW RATE DETECTOR BACKPLANE-TO-CARD CONNECTION CONNECT STOP BIT AND BUS IDLE 0 ...

Page 4

... CONNECT 2 mA SLEW RATE DETECTOR BACKPLANE-TO-CARD CONNECTION CONNECT STOP BIT AND BUS IDLE 0 100 s DELAY 0.5 pF Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 C-bus and SMBus bus buffer 2 mA SLEW RATE DETECTOR CONNECT 2 mA SLEW RATE DETECTOR CONNECT CONNECT UVLO RD QB ...

Page 5

... ENABLE is taken from LOW to HIGH it enters an initialization state where the internal references are stabilized and the 92 A input pull-ups (on the PCA9513A) is enabled. At the end of the initialization state the ‘Stop Bit And Bus Idle’ detect circuit is enabled. With the ENABLE pin HIGH long enough to complete the ...

Page 6

... SDAIN and SCLIN pins, SDAIN is connected to SDAOUT and SCLIN is connected to SCLOUT pull-up current source on SDAIN and SCLIN of the PCA9513A is activated during the initialization state and remains active until the power is removed or the ENABLE pin is taken LOW. When the 92 A pull-up is active it will become high-impedance any time the pin voltage is greater than V 8 ...

Page 7

... If this were the SCL line, the parts on buffer A and buffer C would see a false clock rather than a stretched clock, which would cause a system error. The PCA9513A and PCA9514A rise time accelerator threshold is 0 there is 0.2 V more noise margin. ...

Page 8

... Rise time accelerators During positive bus transitions current source is switched on to quickly slew the SDA and SCL lines HIGH once the input level of 0.8 V for the PCA9513A and PCA9514A are exceeded. The rising edge rate should be at least 1. guarantee turn on of the accelerators ...

Page 9

... Placing a bus buffer on the edge of each card, however, isolates the card capacitance from the backplane. For a given I/O card, the PCA9513A and PCA9514A drive the capacitance of everything on the card, and the backplane must drive only the capacitance of the bus buffer, which is less than 10 pF, the connector, trace, and all additional cards on the backplane. See Application Note AN10160, ‘ ...

Page 10

... Normally only one PCA9514A would be required per bus. Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9514A in a cPCI, VME, and AdvancedTCA system PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable I I/O PERIPHERAL CARD 1 POWER SUPPLY HOT SWAP ...

Page 11

... Philips Semiconductors BACKPLANE CONNECTOR BACKPLANE V CC BD_SEL SDA SCL Fig 9. Hot swapping multiple I/O cards into a backplane using the PCA9513A in a cPCI, VME, and AdvancedTCA system PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable I I/O PERIPHERAL CARD 1 POWER SUPPLY HOT SWAP ...

Page 12

... SDA SDAIN SCL SCLIN V > CC_LOW R is the line loss the backplane. drop CC voltages CC Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 Hot swappable I C-bus and SMBus bus buffer I/O PERIPHERAL CARD 0. SDAOUT SCLOUT READY GND I/O PERIPHERAL CARD 2 ...

Page 13

... Philips Semiconductors 9. Application design-in information Fig 12. Typical application of PCA9513A Fig 13. Typical application of PCA9514A PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable (2 5 SCLIN 6 SDAIN 1 ENABLE ENABLE GND SCLIN 6 SDAIN 1 ENABLE ENABLE GND Rev. 01 — ...

Page 14

... READY) t SDAIN to READY delay stp(READY) after STOP t SCLOUT/SDAOUT to READY READY delay I off-state leakage current on LZ(READY) pin READY C input capacitance on pin i(ENABLE) ENABLE PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable I Conditions 10 s max. Conditions Min [1] 2 SDAIN SCLIN ...

Page 15

... L [ SDAn, SCLn 0 I pins mA; sink ENABLE CC PCA9513A only [ ENABLE CC PCA9513A only SDAn, SCLn pins 5 [4] 0 [4] 1.3 [4] 0.6 [4] 0.6 [4] 0.6 [4] 300 [4] 100 [4] 1.3 [4] 0.6 [4] [ 0.1 [4] [ 0.1 Rev. 01 — 11 October 2005 2 C-bus and SMBus bus buffer ...

Page 16

... C) amb Fig 15. I 002aab589 V O (mV) + amb = 10 k PU(out) Fig 17. Connection circuitry V Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 Hot swappable I C-bus and SMBus bus buffer characteristics”. characteristics”. and measure the SDAOUT and SCLOUT ...

Page 17

... Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 Hot swappable I C-bus and SMBus bus buffer t dis t stp(READY stp(READY) © Koninklijke Philips Electronics N.V. 2005. All rights reserved. 002aab592 002aab593 002aab594 ...

Page 18

... Test information R = load resistor load capacitance includes jig and probe capacitance termination resistance should be equal to the output impedance Z T Fig 21. Test circuitry for switching times PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable PULSE D.U.T. GENERATOR the pulse generator o Rev. 01 — ...

Page 19

... 0.49 0.25 5.0 4.0 1.27 0.36 0.19 4.8 3.8 0.019 0.0100 0.20 0.16 0.244 0.05 0.014 0.0075 0.19 0.15 0.228 REFERENCES JEDEC JEITA MS-012 Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 Hot swappable I C-bus and SMBus bus buffer detail 6.2 1.0 0.7 1 ...

Page 20

... 2.5 scale (1) ( 0.45 0.28 3.1 3.1 0.65 0.25 0.15 2.9 2.9 REFERENCES JEDEC JEITA Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 Hot swappable I C-bus and SMBus bus buffer detail 5.1 0.7 0.94 0.1 0.1 0.1 4.7 0.4 EUROPEAN PROJECTION © ...

Page 21

... For packages with leads on two sides and a pitch (e): – larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable I 2 called small/thin packages. Rev. 01 — 11 October 2005 ...

Page 22

... LBGA, LFBGA, SQFP, [3] , TFBGA, VFBGA, XSON , SO, SOJ [8] [9] [8] , PMFP , WQCCN.. measured in the atmosphere of the reflow oven. The package Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 Hot swappable I C-bus and SMBus bus buffer Soldering method Wave not suitable [4] not suitable suitable [5] [6] ...

Page 23

... PCI Industrial Computer Manufacturers Group System Management Bus VERSAModule Eurocard Data sheet status Change notice Product data sheet - Rev. 01 — 11 October 2005 PCA9513A; PCA9514A 2 C-bus and SMBus bus buffer Doc. number - © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Supersedes - ...

Page 24

... Contact information For additional information, please visit: http://www.semiconductors.philips.com For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com PCA9513A_PCA9514A_1 Product data sheet PCA9513A; PCA9514A Hot swappable I [2] [3] Definition This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specifi ...

Page 25

... No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Document number: PCA9513A_PCA9514A_1 Published in The Netherlands Date of release: 11 October 2005 ...

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