ASI4U datasheet(45/71 Pages) RENESAS

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ASI4U / ASI4U-E / ASI4U-F Datasheet

January 26, 2016

Figure 4.10 Flowchart – Data_Exchange_Disable

Safety_Mode

Sync_Enable

Filter_Enable

Data_Exchange_Disable

>=1

4.7.7.

Master, Repeater, and Monitor Modes

In the Master, Repeater, and Monitor Modes, the configurations of the data input and data output ports are

different than in Slave Mode. The control signals defined in Table 4.17 are provided at the data input port in the

Master, Repeater, and Monitor Modes.

Table 4.17 Control Signal Inputs in the Master, Repeater, and Monitor Modes

DATA INPUT PORT

SIGNAL NAME

DESCRIPTION

DI0

invert_ird_a

If the signals invert_ird_a and invert_ird_b are not equal, the IRD input signal

is inverted before further processing. See Table 4.6.

DI1

invert_ird_b

DI2

invert_led1_a

If the signals invert_led1_a and invert_led1_b are not equal, the LED1 output

signal is inverted after processing. See Table 4.21.

DI3

invert_led1_b

Note: The complemented definition is designed to retain backward compatibility to A²SI-based AS-i Master

designs.

The Data Output Port is used exclusively in Monitor Mode to provide additional UART error signals. The signals

are defined to be active LOW and will be set immediately after a telegram error was detected. They become reset

at the beginning of the next telegram. The signals described in Table 4.18 are available:

Table 4.18 Error Signal Outputs in Monitor Mode

DATA PORT

OUTPUT

UART ERROR

SIGNAL

DESCRIPTION

DO0

plscod_err

Pulse Code Error

Indicates faulty AS-i pulses. This is a disjunction of alternation

error, start bit error and end bit error. See section 4.12.1.

DO1

no_info_err

No Information Error

Length Error

The output signal is a disjunction of No_Information_Error and

Length_Error as defined in the AS-Interface Complete Spec V3.0.

The Monitor Mode does not distinguish between synchronized

and non-synchronized UART Mode. There is always only one bit

time supervised after the end of a telegram.

DO2

parb_err

Parity Bit Error

Received parity bit does not match the check sum calculated by

the UART.

DO3

ird_man_err

Manchester-II-Code

Error at IRD input

Signal at IRD input violates Manchester-II-coding rules.

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