M32C83T datasheet(338/527 Pages) RENESAS

338 / 527 page

Page 315

21. Intelligent I/O (Group 2 Communication Function)

)

(

Table 21.37 Registers to be Used and Settings

Bit

Function

G2BCR0

BCK1 to BCK0

Set to "112"

DIV4 to DIV0

Select divide ratio of count source

Set to "0"

G2BCR1

7 to 0

Set to "000100102"

G2POCR0

MOD2 to MOD0

Set to "1112"

to G2POCR7

PRT

Set to "0"

IVL

Set to "0"

RLD

Set to "0"

RTP

Set to "0"

INV

Set to "0"

G2PO0 to

15 to 0

Set compared data for waveform generation

G2PO7

G2FE

7 to 0

Set bit of corresponding channel to "1"

G2MR

GMD1 to GMD0

Select serial I/O mode

CKDIR

Select internal clock or external clock

UFORM

Select either LSB first or MSB first

IRS

Select how the transmit interrupt is generated

G2CR

Transmit buffer empty flag

TXEPT

Transmit register empty flag

Receive complete flag

When transmission is enabled, set to "1"

When reception is enabled, set to "1"

IPOL

ISRxD2 input polarity inverse (usually set to "0")

OPOL

ISTxD2 output polarity inverse (usually set to "0")

IECR

IEB

Set to "1"

IETS

When transmission starts, set to "1"

IEBBS

Select IEBus busy flag

Select whether the digital filter is available or not

IEM

Select mode

IEAR

11 to 0

Set address data

IETIF

IETNF

Normal complete flag when transmitting

IEACK

ACK error flag when transmitting

IETMB

Maximum transfer byte error flag when transmitting

IETT

Timing error flag when transmitting

IEABL

Arbitration lost flag when transmitting

IERIF

IERNF

Normal complete flag when receiving

IEPAR

Parity error flag when receiving

IERMB

Maximum transfer byte error flag when receiving

IERT

Timing error flag when receiving

IERETC

Other cause receive completed flag when receiving

G2RB

7 to 0

Received data and error flag are stored

OER

Overrun error flag

G2TB

7 to 0

Write transfer bit length and data to be transmitted

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