PCA9527 Ver la hoja de datos (PDF) - NXP Semiconductors.

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PCA9527

3-channel bidirectional bus extender for HDMI, I2C-bus and SMBus

NXP Semiconductors. 

NXP Semiconductors

PCA9527

3-channel bidirectional bus extender for HDMI, I2C-bus and SMBus

Table 3.

Pin

SDAA

SCLA

HDMI DDC pull-up resistors specification

Where

Minimum

at the source (DVD/STB)

1.5 kΩ

at the sink (LCD TV)

-

at the source (DVD/STB)

1.5 kΩ

at the sink (LCD TV)

Maximum

2.0 kΩ

-

2.0 kΩ

47 kΩ ± 10 %

10.5

RPU

(kΩ)

8.5

002aad620

6.5

4.5

complies with

1 µs rise time

2.5

does not comply with

1 µs rise time

0.5

0

1.0

2.0

3.0

4.0

CL (nF)

rise time = 1 µs; VCC(A) = 5 V

Fig 4. SDAA/SCLA line pull-up resistor versus load capacitance

6.3.2 Port A (CECA)

CECA does not have a rise time accelerator, but has a standard open-drain I/O. In

addition to incurring no offset voltage, it has edge rate control and a lower capacitance

than those of standard discrete MOSFET, and isolates the input/output capacitance. It is

designed for a lower speed channel for consumer electronic control (less than 10 kHz) or

general purpose interrupt or reset over long cable.

CECA does not have internal pull-up. The pull-up resistor is calculated using standard

I2C-bus pull-up resistor formula, as shown in Section 6.3.3 “Port B (SDAB, SCLB, CECB)”.

PCA9527_1

Product data sheet

Rev. 01 — 29 June 2009

© NXP B.V. 2009. All rights reserved.

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