3886 datasheet(186/380 Pages) RENESAS

186 / 380 page

3886 Group User’s Manual

APPLICATION

2-69

2.4 Serial I/O

Fig. 2.4.39 Registers setting relevant to transmitting side

Serial I/O1 status register (Address : 1916)

SIO1STS

Transmitting side

Baud rate generator (Address : 1C16)

BRG

SIO1CON 10 0 1

0 1

UART control register (Address : 1B16)

UARTCON0

f(XIN)

Transfer bit rate ✕ 16 ✕ m

–1

Serial I/O1 control register (Address : 1A16)

Set

When bit 0 of the Serial I/O1 control register (Address : 1A16) is set to “0,”

a value of m is 1.

When bit 0 of the Serial I/O1 control register (Address : 1A16) is set to “1,”

a value of m is 4.

✽

BRG count source selection bit : f(XIN)/4

Serial I/O1 synchronous clock selection bit : BRG/16

Transmit enable bit : Transmit enabled

Receive enable bit : Receive disabled

Serial I/O1 mode selection bit : Asynchronous serial I/O(UART)

Serial I/O1 enable bit : Serial I/O1 enabled

SRDY1

output enable bit :SRDY1 out disabled

Character length selection bit : 8 bits

Parity enable bit : Parity checking disabled

P45/TXD P-channel output disable bit : CMOS output

Stop bit length selection bit : 2 stop bits

Transmit buffer empty flag

• Confirm that the data has been transferred from Transmit buffer

• When this flag is “1”, it is possible to write the next transmission

data in to Transmit buffer register.

Transmit shift register shift completion flag

Confirm completion of transmitting 1-byte data with this flag.

“1” : Transmit shift completed

3886 Datasheet(PDF) 186 Page - Renesas Technology Corp

3886 Datasheet(HTML) 186 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL