Serial Communications Between Sh7727 And The Power Supply Controller; Serial Format; Power Supply Control Register Read Procedure - Renesas SH7727 General Information Manual

R0P7727TH003TRKE General Information Manual

6.2 Serial Communications between SH7727 and the Power Supply Controller

This section describes how serial communications take place between SH7727 and the power supply controller.

6.2.1 Serial Format

This subsection describes a format for serial communications between SH7727 and the power supply controller.
(1) Mode: Start-stop
(2) Baud rate: 38400 bits/second
(3) Stop bit: 1 bit
(4) Start bit: 1 bit
(5) Parity bit: None
(6) LSB first

6.2.2 Power Supply Control Register Read Procedure

This subsection describes a procedure for reading the power supply control registers.
(1) SH7727 issues a read command to a power supply controller.
(2) The power supply controller returns a response to SH7727.
Don't issue multiple commands continually from SH7727. Note that the next command must be
issued after a response to the preceding command has been returned from the power supply controller.
CAUTION
43
Power Supply Controller