ZIOL2201 datasheet(22/92 Pages) RENESAS

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ZIOL2xxx Datasheet

April 26, 2016

Figure 3.6

Typical IO-Link Device Configuration with HS driver only

Master

Device

[ C/Q ]

sink

[ L+ ]

High-Side

Driver only

[ L- ]

Table 3.4

Sink Mode Configuration in Detail

Mode

Sink enabling

Remark

n.a.

Sink steady disabled

OFF

Device

Mode

Sink steady disabled

Typical application mode for the

IO-Link channel:

device: no sink

master: sink enabled contrary to

the corresponding driver enable

signal

Master

Mode

Sink enabled if:

•

TX_EN/SPI_CLK = low (COM)

•

AUX_EN = low (AUX)

n.a.

Sink enabled if:

•

TX_EN/SPI_CLK = low (COM)

•

AUX_EN = low (AUX)

Enabling contrary to the driver

enable signal;

sink is only enabled while the driver

is disabled. (helps to reduce the

system’s power dissipation)

n.a.

steady enabled

1) MASTER_MODE flag (configuration register MASTER_SENS_CTRL[7] is cleared (=0).

2) MASTER_MODE flag (configuration register MASTER_SENS_CTRL[7] is set (=1).

3.3.

System Control

3.3.1.

General

The system control provides device configuration, status signaling and SPI data transfer functionality.

Implemented are several register areas which contain configuration data and which provide status information. In

order to gain read/write access to these register areas, the standard serial peripheral interface (SPI) is

implemented. Since the pin count of the package is limited to 24 pins, the SPI specific pins (CLK, MOSI, and

MISO) are multiplexed with IO-pins of the COM driver. A dedicated pin SPI_EN_L is used to switch between SPI

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