M32C83T datasheet(328/527 Pages) RENESAS

328 / 527 page

Page 305

21. Intelligent I/O (Group 0, 1 Communication Function)

)

(

Table 21.29 Registers to be Used and Settings

Bit

Function

GiBCR0

BCK1 to BCK0

Select count source

DIV4 to DIV0

Select divide ratio of count source

Select the base timer interrupt

GiBCR1

7 to 0

Set to "0001 00102"

GiPOCR0

7 to 0

Set to "0000 00002"

GiPOCR1

7 to 0

Set to "0000 00002"

GiPO0

15 to 0

Set bit rate

GiPO1

15 to 0

Set the timing of the rising edge of the transfer clock.

Timing of the falling edge (high-level signal ("H") width of the transfer clock) is

fixed.

Setting value of GiPO1

≤ Setting value of GiPO0 .

GiFS

FSC1 to FSC0

Set to "002"

GiFE

IFE1 to IFE0

Set to "112"

GiMR

GMD1 to GMD0

Set to "112"

CKDIR

Set to "0"

UFORM

Set to "0"

IRS

Select how the transmit interrupt is generated

GiEMR

7 to 0

Set to "1111 01102"

GiCR

Transmit buffer empty flag

TXEPT

Transmit register empty flag

Receive complete flag

Transmit enable bit

Receive enable bit

GiETC

SOF

Set to "0"

TCRCE

Select whether the transmit CRC is used or not

ABTE

Set to "0"

TBSF0, TBSF1

Transmit bit stuffing

GiERC

CMP2E to CMP0E Select whether received data is compared or not

CMP3E

Set to "1"

RCRCE

Select whether receive CRC is used or not

RSHTE

Set to "1" to use it in the receiver

RBSF0, RBSF1

Receive bit stuffing

GiIRF

BSERR, ABT

Set to "0"

IRF3 to IRF0

Select how an interrupt is generated

GiCMP0,

7 to 0

Write "FE16" to abort processing

GiCMP1

GiCMP2

7 to 0

Data to be compared

GiCMP3

7 to 0

Write "7E16"

GiMSK0,

7 to 0

Write "0116" to abort processing

GiMSK1

GiTCRC

15 to 0

Transmit CRC calculation result can be read

GiRCRC

15 to 0

Receive CRC calculation result can be read

GiTO

7 to 0

Data, which is output from a transmit data generation circuit, can be read

GiRI

7 to 0

Set data input to a receive data generation circuit

GiRB

7 to 0

Received data is stored

GiTB

7 to 0

For transmission : write data to be transmitted

For reception

: received data for comparison is stored

i = 0,1

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