M38063M2AFP datasheet(24/58 Pages) RENESAS

24 / 58 page

MITSUBISHI MICROCOMPUTERS

3806 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Serial I/O2

The serial I/O2 function can be used only for clock synchronous

serial I/O.

For clock synchronous serial I/O the transmitter and the receiver

must use the same clock. If the internal clock is used, transfer is

started by a write signal to the serial I/O2 register.

Serial I/O2 control register (SIO2CON) 001D16

The serial I/O2 control register contains seven bits which control

various serial I/O functions.

Fig. 15 Structure of serial I/O2 control register

Fig. 16 Block diagram of serial I/O2 function

Serial I/O2 control register

(SIO2CON : address 001D16)

Internal synchronous clock selection bits

0 0 0: f(XIN)/8

0 0 1: f(XIN)/16

0 1 0: f(XIN)/32

0 1 1: f(XIN)/64

1 1 0: f(XIN)/128

1 1 1: f(XIN)/256

Serial I/O2 port selection bit

0: I/O port

1: SOUT2,SCLK2 signal output

SRDY2 output enable bit

0: I/O port

1: SRDY2 signal output

Transfer direction selection bit

0: LSB first

1: MSB first

Serial I/O2 synchronous clock selection bit

0: External clock

1: Internal clock

Not used (returns “0” when read)

b2 b1 b0

XIN

"1"

"0"

"1"

"0"

"1"

SRDY2

"0"

"1"

1/8

1/16

1/32

1/64

1/128

1/256

Data bus

Serial I/O2

interrupt request

Serial I/O2 port selection bit

Serial I/O counter 2 (3)

Serial I/O shift register 2 (8)

Synchronization circuit

Serial I/O2 port selection bit

Serial I/O2 synchronous

clock selection bit

SRDY2 output enable bit

External clock

Internal synchronous

clock selection bits

P73 latch

P73/SRDY2

P72/SCLK2

P71/SOUT2

P70/SIN2

P72 latch

P71 latch

M38063M2AFP Scheda tecnica(PDF) 24 Page - Renesas Technology Corp

M38063M2AFP Scheda tecnica(HTML) 24 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

Scheda tecnica Scarica

Link URL