Usage Note; Setting Of Module Stop Mode; Notes On Clearing Module Stop Mode - Renesas H8SX/1520 Series Hardware Manual

Section 14 Synchronous Serial Communication Unit (SSU)
14.6

Usage Note

14.6.1

Setting of Module Stop Mode

The SSU can be enabled/disabled by the module stop control register setting and is disabled by the
initial value. Canceling module stop mode enables to access the SSU registers. For details, see
section 19, Power-Down Modes.
14.6.2

Notes on Clearing Module Stop Mode

When clearing module stop mode, attention is required to the following.
When using the SSU channel 1 (or 2), module stop mode of the SSU channel 1 (or 2) is not
cleared without clearing both 1 and 2 bits listed below.
1. Module stop bit for channel 1 (or 2): MSTPC9 (or MSTPC10)
2. Module stop bit for channel 0: MSTPC8
When the SSU channel 0 is not used for the SSU function, I/O port pins that are multiplexed with
the SSU channel 0 function can be used as I/O port pins unless module stop mode of SSU channel
0 is cleared and the SSU channel 0 is enabled for transmission and reception.
Rev. 3.00 Mar. 14, 2006 Page 546 of 804
REJ09B0104-0300
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