Renesas rl78 User Manual

RL78/G1A

CHAPTER 12 SERIAL ARRAY UNIT

R01UH0305EJ0200 Rev.2.00

550

Jul 04, 2013

(2) Operation procedure

Figure 12-104. Initial Setting Procedure for Address Field Transmission

Notes 1.

25 to 48-pin products

64-pin products

Remark m: Unit number (m = 0, 1), n: Channel number (n = 0 to 3), mn = 00 to 03, 10, 11

Starting initial setting

Setting the PER0 register

Setting the SPSm register

Setting the SMRmn register

Setting the SCRmn register

Setting the SDRmn register

Setting the SOm register

Setting port

Release the serial array unit from the

reset status and start clock supply.

Set the operation clock.

Set an operation mode, etc.

Set a communication format.

Set a transfer baud rate (setting the

transfer clock by dividing the operation

clock (f

MCK

)).

Set the initial output level (1) of the serial

data (SOmn) and serial clock (CKOmn).

Enable data output, clock output, and N-ch open-

drain output (V

tolerance

Note 1

/EV

tolerance

Note 2

)

mode of the target channel by setting the port

Starting communication