SH7203 Datasheet, PDF (833/1686 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 16 Synchronous Serial Communication Unit (SSU)
16.4.4 Communication Modes and Pin Functions
The SSU switches the input/output pin (SSI, SSO, SSCK, and SCS) functions according to the
communication modes and register settings. The relationship of communication modes and
input/output pin functions are shown in tables 16.5 to 16.7.
Table 16.5 Communication Modes and Pin States of SSI and SSO Pins
Communication
Register Setting
Mode
SSUMS BIDE MSS TE
RE
SSU communication 0
0
0
0
1
mode
1
0
1
1
0
1
1
0
1
SSU (bidirectional) 0
1
0
0
1
communication mode
1
0
1
0
1
1
0
Clock synchronous 1
0
0
0
1
communication mode
1
0
1
1
0
1
1
0
1
[Legend]
⎯: Not used as SSU pin (but can be used as an I/O port)
Pin State
SSI
SSO
⎯
Input
Output ⎯
Output Input
Input
⎯
⎯
Output
Input
Output
⎯
Input
⎯
Output
⎯
Input
⎯
Output
Input
⎯
⎯
Output
Input
Output
Input
⎯
⎯
Output
Input
Output
Rev. 2.00 Apr. 16, 2008 Page 803 of 1652
REJ09B0313-0200