3819 datasheet(102/218 Pages) RENESAS

102 / 218 page

2. APPLICATION

MITSUBISHI MICROCOMPUTER

3819 Group

2.3 Serial I/O

3819 Group USER’S MANUAL

Fig. 2.3.5 Structure of Serial I/O automatic transfer interval register

Fig. 2.3.6 Structure of Serial I/O 2 control register

Serial I/O automatic transfer interval register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Serial I/O automatic transfer interval register (SIOAI) [Address:1C16]

Nothing is allocated for these bits. These are write disabled bits.

When these bits are read out, the values are "0."

Ti = (n + 2) ! Tc

Ti = a length of transfer interval

n = a setting value

Tc = a length of a bit of transfer clock

Serial I/O 2 control register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Serial I/O 2 control register (SIO2CON) [Address:1D 16]

Name

Internal synchronous clock

selection bits

Synchronous clock selection

bit

000 : f(XIN)/8 or f(XCIN)/8

001 : f(XIN)/16 or f(XCIN)/16

010 : f(XIN)/32 or f(XCIN)/32

011 : f(XIN)/64 or f(XCIN)/64

110 : f(XIN)/128 or f(XCIN)/128

111 : f(XIN)/256 or f(XCIN)/256

0 : External clock

1 : Internal clock

b2 b1b0

Serial I/O 2 port selection bit

(P51,P52 )

Transfer direction selection bit

0 : LSB first

1 : MSB first

SRDY2 output selection bit

(P53)

0 : I/O port

1 : SRDY2 signal pin

0 : I/O port

1 : SOUT2, SCLK2 signal pins

7 P51/SOUT2 P-channel output

disable bit

0 : CMOS output (in output mode)

1 : N-channel open-drain output

(in output mode)

3819 Datasheet(PDF) 102 Page - Renesas Technology Corp

3819 Datasheet(HTML) 102 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