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Section 18 Serial Sound Interface
R01UH0134EJ0400 Rev. 4.00 Page 929 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
18.4.3 Operation Modes
There are three modes of operation: configuration, enabled and disabled. Figure 18.19 shows how
the module enters each of these modes.
TEN = 1
or
REN = 1
(IDST = 0)
TEN = 0
and
REN = 0
(IDST = 0)
TEN = 0
and
REN = 0
(IDST = 1)
Reset
Module
configuration
(after reset)
Module disabled
(waiting until
bus inactive)
Module enabled
(normal tx/rx)
Figure 18.19 Operation Modes
(1) Configuration Mode
This mode is entered after the module is released from reset. All required configuration fields in
the control register should be defined in this mode, before this module is enabled by setting the
TEN and REN bits.
Setting the TEN and REN bits causes the module to enter the module enabled mode.
(2) Module Enabled Mode
Operation of the module in this mode is dependent on the operation mode selected. For details,
refer to section 18.4.4, Transmit Operation and section 18.4.5, Receive Operation, below.