Serial Status Register (Ssr) - Hitachi H8/3006 Hardware Manual

For smart card interface (SMIF bit in SCMR set to 1): These bits, together with the GM bit in
SMR, determine whether the SCK pin is used for generic input/output or as the serial clock output
pin.
SMR Bit 1 Bit 0
GM CKE1 CKE0 Description
0 0 0
0 0 1
1 0 0
1 0 1
1 1 0
1 1 1
13.2.7

Serial Status Register (SSR)

SSR is an 8-bit register containing multiprocessor bit values, and status flags that indicate the
operating status of the SCI.
440
SCK pin available for generic input/output
SCK pin used for clock output
SCK pin output fixed low
SCK pin used for clock output
SCK pin output fixed high
SCK pin used for clock output
(Initial value)