M32C83T datasheet(321/527 Pages) RENESAS

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Page 298

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

)

(

Table 21. 20 Pin Settings (3)

Port

Function

Bit and Setting

Name

PS5 Register PD11 Register IPS Register

P110

ISTxD1 output

PS5_0 = 1

G1POCR0

P111

ISCLK1 input

PS5_1 = 0

PD11_1 = 0

IPS1 = 1

ISCLK1 output

PS5_1 = 1

G1POCR1

P112

ISRxD1 input

PS5_2 = 0

PD11_2 = 0

IPS1 = 1

NOTES:

1. Set the MOD2 to MOD0 bits in the corresponding register to "1112" (output of the communication

function used).

Table 21. 21 Pin Settings (4)

Port

Function

Bit and Setting

Name

PS9 Register PD15 Register IPS Register

P150

ISTxD0 output

PS9_0 = 1

G0POCR0

P151

ISCLK0 input

PS9_1 = 0

PD15_2 = 0

IPS0 = 1

ISCLK0 output

PS9_1 = 1

G0POCR1

P152

ISRxD0 input

PS9_2 = 0

PD15_2 = 0

IPS0 = 1

NOTES:

1. Set the MOD2 to MOD0 bits in the corresponding register to "1112" (output of the communication

function used).

n+2

Base timer i

The base timer is reset by the channel 0

waveform generation function

ISRxDi pin input

(received data)

ISTxDi pin output

(data to be transmitted)

ISCLKi pin output

(transmit clock in the

channel 3 generation

function)

SIOiTR bit

when IRS=0

(no data in the

transmit buffer)

SIOiTR bit

when IRS=1

(transmission completed)

Write to the GiTB register

The above applies under the following conditions:

• The CKDIR bit in the GiMR register is set to "0" (internal clock)

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

• The IPOL and OPOL bits in the GiCR register are set to "0" (no inverse)

n : Setting value of the GiPO0 register

m : Setting value of the GiPO3 register

: 0,1

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

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

IRS bit

: Bit in the GiMR register

Bit 1

Bit 2

Bit 6

Bit 0

Bit 7

Bit 1

Bit 2

Bit 6

Bit 0

Bit7

SIOiRR bit

Write "0" by program if setting to "0"

Write "0" by program

if setting to "0"

Write "0" by program

if setting to "0"

Figure 21.39 Transmit and Receive Operation

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