Slave Transmission - Renesas RL78/G1P Hardware User Manual

RL78/G1P

11.6.1 Slave transmission

Slave transmission is that the RL78/G1P transmits data to another device in the state of a transfer clock being input
from another device.
Slave Select Input
Function
Target channel
Pins used
Interrupt
Error detection flag
Transfer data length
Transfer rate
Data phase
Clock phase
Data direction
Slave select Input
function
Notes 1. Because the external serial clock input to the SCK00 pin is sampled internally and used, the fastest transfer
rate is f /6 [Hz].
MCK
2. Use this operation within a range that satisfies the conditions above and the AC characteristics in the
electrical specifications (see CHAPTER 27 ELECTRICAL SPECIFICATIONS).
Remarks 1. f : Operation clock frequency of target channel
MCK
2. m: Unit number (m = 0), n: Channel number (n = 0)
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Channel 0 of SAU0
SCK00, SO00, SSI00
INTCSI00
Transfer end interrupt (in single-transfer mode) or buffer empty interrupt (in continuous transfer mode)
can be selected.
Overrun error detection flag (OVFmn) only
7 or 8 bits
Notes 1, 2
Max. f /6 [Hz] .
MCK
Selectable by the DAPmn bit of the SCRmn register
 DAPmn = 0: Data output starts from the start of the operation of the serial clock.
 DAPmn = 1: Data output starts half a clock before the start of the serial clock operation.
Selectable by the CKPmn bit of the SCRmn register
 CKPmn = 0: Non-reverse
 CKPmn = 1: Reverse
MSB or LSB first
Slave select input function operation selectable
CHAPTER 11 SERIAL ARRAY UNIT
CSI00
402