M32C83T datasheet(325/527 Pages) RENESAS

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Page 302

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

)

(

Figure 21.40 Transmit Operation

Figure 21.41 Receive Operation

"H"

"L"

"1"

"0"

"1"

"0"

"1"

"0"

D0 D1 D2 D3 D4 D5 D6 D7

Set data in the GiTB register

SIOiTR bit

TI bit

ISTxDi pin

Transfer clock

TXEPT bit

The above applies under the following conditions:

• The STPS bit in the GiMR register is set to "0" (1 stop bit)

• The UFORM bit in the GiMR register is set to "0" (LSB first)

• The INV bits in the GiPOCR0 to GiPOCR7 registers are set to "0" (no inverse)

• The IRS bit in the GiMR register is set to "0" (no data in the transmit buffer)

i : 0,1

TI, TXEPT bit : Bits in the GiCR register

SIOiTR bit

: Bit in the IIOjIR register (j = 1,3)

Write "0" by program

if setting to "0"

D0 D1 D2 D3 D4 D5 D6 D7

Read the GiDRB register

ISRxDi pin

Transfer clock

SIOiRR bit

RI bit

The above applies under the following conditions:

• The STPS bit in the GiMR register is set to "0" (1 stop bit)

• The UFORM bit in the GiMR register is set to "0" (LSB first)

• The INV bits in the GiPOCR0 to GiPOCR7 registers are set to "0" (no inverse)

i : 0,1

SIOiRR bit : Bit in the IIOkIR register (k = 0,2)

RI bit

: Bit in the GiCR register

"H"

"L"

"1"

"0"

"1"

"0"

Write "0" by program

if setting to "0"

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