Renesas H8S Family, Hardware Manual

Page: 609 / 1230

Section 17 Synchronous Serial Communication Unit (SSU)
Rev. 1.00 Mar. 12, 2008 Page 561 of 1178
REJ09B0403-0100
17.3.6 SS Control Register 2 (SSCR2)
SSCR2 is a register that enables/disables the open-drain outputs of the SSO, SSI, SSCK, and
SCS
pins, selects the assert timing of the
SCS
pin, data output timing of the SSO pin, and set timing of
the TEND bit.
Bit Bit Name
Initial
Value
R/W Description
7 SDOS 0 R/W Serial Data Pin Open Drain Select
Selects whether the serial data output pin is used as a
CMOS or an NMOS open drain output. Pins to output
serial data differ according to the register setting. For
details, 14.4.3, Relationship between Data Input/Output
Pins and Shift Register.
0: CMOS output
1: NMOS open drain output
6 SSCKOS 0 R/W SSCK Pin Open Drain Select
Selects whether the SSCK pin is used as a CMOS or
an NMOS open drain output.
0: CMOS output
1: NMOS open drain output
5 SCSOS 0 R/W
SCS
Pin Open Drain Select
Selects whether the
SCS
pin is used as a CMOS or an
NMOS open drain output.
0: CMOS output
1: NMOS open drain output
4 TENDSTS 0 R/W Selects the timing of setting the TEND bit (valid in SSU
and master mode).
0: Sets the TEND bit when the last bit is being
transmitted
1: Sets the TEND bit after the last bit is transmitted