Datasheet

Section 22 Synchronous Serial Communication Unit (SSU)
Page 774 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
22.2.5 SS Mode Register 2 (SSMR2)
Address:
Bit:
Value after reset:
b7
BIDE
0
b6
SCKS
0
b5
0
b4
0
b3
SCKOS
0
b2
SOOS
0
b1
CSOS
0
b0
SSUMS
0
H'FF05CD
CSS[1:0]
Bit Symbol Bit Name Description R/W
7 BIDE Bidirectional
mode enable
0: Normal mode.
Communication is performed by using two pins.
1: Bidirectional mode.
Communication is performed by using only one
pin.
R/W
6 SCKS SSCK pin
select
0: Functions as a port*
1
1: Functions as a serial clock pin
R/W
5, 4 CSS[1:0] SCS pin select 00: Functions as a port*
1
01: Functions as an SCS input
1X: Functions as an SCS output (however,
functions as an SCS input before starting
transfer)
R/W
3 SCKOS SSCK pin
open-drain
output select
0: CMOS output
1: NMOS open-drain output*
2
R/W
2 SOOS SSO/SSI pins
open-drain
output select
SSO pin
0: CMOS output
1: NMOS open-drain output*
2
SSI pin
0: CMOS output or NMOS push-pull output*
3
1: NMOS open-drain output*
2
R/W
1 CSOS SCS pin open-
drain output
select
0: CMOS output or NMOS push-pull output*
3
1: NMOS open-drain output*
2
R/W