upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 400

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

400
In 6-byte transmission (ATM0 = 1, RXEA0 = 0, TXEA0 = 1, ATE0 = 1) in repeat transmission mode,
internal buffer RAM operates as follows.
(i) Starting transmission (see Figure 17-21 (a).)
(ii) Upon completion of transmission of 6 bytes (see Figure 17-21 (b).)
(iii) 7th byte transmission point (see Figure 17-21 (c).)
FA1FH
FA05H
FA00H
When bit 0 (ATSTA0) of serial trigger register 0 (CSIT0) is set to 1, transmit data 1 (T1) is transferred
from the internal buffer RAM to SIOA0. When transmission of the first byte is completed, automatic
data transfer address count register 0 (ADTC0) is incremented.
transferred from the internal buffer RAM to SIOA0.
When transmission of the sixth byte is completed, the interrupt request flag (ACSIIF) is not set.
ADTC0 is reset to 0.
Transmit data 1 (T1) is transferred from the internal buffer RAM to SIOA0 again. When transmission
of the first byte is completed, ADTC0 is incremented. Then transmit data 2 (T2) is transferred from
the internal buffer RAM to SIOA0.
Figure 17-21. Internal Buffer RAM Operation in 6-Byte Transmission
Transmit data 6 (T6)
Transmit data 5 (T5)
Transmit data 4 (T4)
Transmit data 3 (T3)
Transmit data 2 (T2)
Transmit data 1 (T1)
CHAPTER 17 SERIAL INTERFACE CSIA0
(in Repeat Transmission Mode) (1/2)
(a) Starting transmission
User’s Manual U15947EJ3V1UD
+1
5
0
0
Then transmit data 2 (T2) is
SIOA0
ADTP0
ADTC0
ACSIIF