M32CSLASH86 datasheet(325/505 Pages) RENESAS

325 / 505 page

Page 302

22. Intelligent I/O (Communication Function)

)

(

Figure 22.30 Transmit and Receive Operation

n+2

Base Timer

The base timer is reset by the channel 0

waveform generation function

ISRxD1 Pin Input

(received data)

ISTxD1 Pin Output

(transmit data)

ISCLK1 Pin Output

(transmit clock in the

channel 3 generation

function)

SIO1TR Bit when IRS=0

(no data in the

G1TB register)

Write to the G1TB register

ISRxDi Pin Input

(received data)

ISTxDi Pin Output

(transmit data)

SIOiTR Bit when IRS=0

(no data in the

GiTB register)

SIOiTR Bit when IRS=1

(transmission completed)

Write to the GiTB register

The above applies to the following conditions:

• The CKDIR bit in the G1MR register is set to "0" (internal clock)

• The CCS3 and CCS2 bits in the CCS register are set to "002"

• The UFORM bit in the G1MR register is set to "0" (LSB first)

• The IPOL and OPOL bits in the G1CR register are set to "0" (no inverse)

n : Setting value of the G1PO0 register

m : Setting value of the G1PO3 register

SIO1TR bit : Bit in the IIO3IR register

SIO1RR bit : B it in the IIO2IR register

IRS bit

: Bit in the G1MR register

The above applies to the following conditions:

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

• The CCS1 and CCS0 bits or the CCS3 and CCS2 bits in the CCS register

are set to "102" or "112"

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

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

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

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

IRS bit

: Bit in the GiMR register

TE bit

: Bit in the GiCR register

i=0, 1

Bit 1

Bit 2

Bit 6

Bit 0

Bit 7

Bit 1

Bit 2

Bit 6

Bit 0

Bit7

SIO1RR Bit

SIOiRR Bit

Write "0" by program

if setting to "0"

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

Transfer Clock

f8, f2n or

External Clock

TE Bit

Bit 1

Bit 2

Bit 6

Bit 0

Bit7

Bit 1

Bit 2

Bit 6

Bit 0

Bit7

Write "0" by program

if setting to "0"

Write "0" by program

if setting to "0"

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

(1) When f8, f2n or External Clock is Selected as the Communication clock

(Communication Units 0 and 1)

(2) When the Communication Clock is Generated in Channel 3 Phase-Delayed Waveform Output Mode

(Communication Unit 1)

M32C/86 데이터시트(PDF) 325 Page - Renesas Technology Corp

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