M32CSLASH86 datasheet(327/505 Pages) RENESAS

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Page 304

22. Intelligent I/O (Communication Function)

)

(

Table 22.21 Clock Settings (Communication Unit 1)

Transfer Clock(3)

G1MR Register

CCS Register

CKDIR Bit

CCS2 Bit

CCS3 Bit

fBT1

n+2)

n: Setting value of the G1PO0 register 000116 to FFFD16

NOTES:

1. Transmit clock is generated in phase-delayed waveform output mode of the channel 3 waveform

generating function.

2. Received clock is generated when phase-delayed waveform mode of the channel 2 waveform gener-

ating function and the channel 2 time measurement function is simultaneously performed.

3. The transfer clock must be fBT1 divided by six or more.

Table 22.22 Register Settings in UART Mode (Communication Unit 1)

Bit

Function

G1BCR0

BCK1, BCK0

Set to "112" (f1)

DIV4 to DIV0

Select divide ratio of count source

Set to "0"

G1BCR1

7 to 0

Set to "0001 00102"

G1POCR0

7 to 0

Set to "0000 01112"

G1POCR2

7 to 0

Set to "0000 01102"

G1POCR3

7 to 0

Set to "0000 00102"

G1TMCR2

7 to 0

Set to "0000 00102"

G1PO0

15 to 0

Set bit rate

= transfer clock frequency

G1PO3

15 to 0

Set to a value smaller than the G1PO0 register

G1FS

FSC3 to FSC0

Set to "01002"

G1FE

IFE3 to IFE0

Set to "11012"

G1MR

GMD1, GMD0

Set to "002"

CKDIR

Set to "0"

STPS

Select stop bit length

PRY, PRYE

Select either parity enabled or disabled and either odd parity or even parity

UFORM

Select either the LSB first or MSB first

IRS

Select what causes the receive interrupt to be generated

G1CR

Transmit buffer empty flag

TXEPT

Transmit register empty flag

Receive complete flag

Set to "1" to enable transmission and reception

Set to "1" to enable reception

IPOL

Set to "1"

OPOL

Set to "1"

G1TB

7 to 0

Write data to be transmitted

G1RB

15 to 0

Received data and error flag are stored

CCS

CCS3, CCS2

Set to "002"

Table 22.23 Pin Settings in UART Mode

Port

Function

Setting

Name

PS1 Register PSL1 Register PSC Register PD7 Register IPS Register

P73

ISTxD1 output

PS1_3 = 1

PSL1_3 = 0

PSC_3 = 1

G1POCR0

P75

ISRxD1 input

PS1_5 = 0

PD7_5 = 0

IPS1 = 0

NOTES:

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

function used).

fBT1

2 x (setting value + 2)

(1, 2)

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