HD64570 Datasheet, PDF (171/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Bit 7 (EOME: EOM Interrupt Enable): The function of this bit is described below.
• Asynchronous/Byte synchronous mode
Reserved. This bit always reads 0 and must be set to 0.
• Bit synchronous mode
EOME = 0: Disables an interrupt set by the EOM bit of ST2
EOME = 1: Enables an interrupt set by the EOM bit of ST2; the RXINT bit of ST0 is set to 1
when the EOM and EOME bits are both 1
Bit 6 (PMPE/SHRTE: PMP/SHRT Interrupt Enable): The function of this bit is described
below.
• Asynchronous/Bit synchronous mode
PMPE/SHRTE = 0: Disables an interrupt set by the PMP/SHRT bit of ST2
PMPE/SHRTE = 1: Enables an interrupt set by the PMP/SHRT bit of ST2; the RXINT bit
of ST0 is set to 1 when the PMP/SHRT and PMPE/SHRTE bits are both 1
• Byte synchronous mode
Reserved. This bit always reads 0 and must be set to 0.
Bit 5 (PEE/ABTE: PE/ABT Interrupt Enable): The function of this bit is described below.
• Asynchronous/Bit synchronous mode
PEE/ABTE = 0:
Disables an interrupt set by the PE/ABT bit of ST2
PEE/ABTE = 1:
Enables an interrupt set by the PE/ABT bit of ST2; the RXINT bit of
ST0 is set to 1 when the PE/ABT and PEE/ABTE bits are both 1
• Byte synchronous mode
Reserved. This bit always reads 0 and must be set to 0.
Bit 4 (FRMEE/RBITE: FRME/RBIT Interrupt Enable): The function of this bit is described
below.
• Asynchronous/Bit synchronous mode
FRMEE/RBITE = 0: Disables an interrupt set by the FRME/RBIT bit of ST2
FRMEE/RBITE = 1: Enables an interrupt set by the FRME/RBIT bit of ST2; the RXINT bit
of ST0 is set to 1 when FRME/RBIT and FRMEE/RBITE bits are both 1
• Byte synchronous mode
Reserved. This bit always reads 0 and must be set to 0.
Rev. 0, 07/98, page 155 of 453