CHAPTER 15 SERIAL INTERFACE CSI10
Preliminary User’s Manual U16315EJ1V0UD
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(2) Setting of ports
<1>
Transmit/receive mode
(a) To use externally input clock as system clock (SCK10)
Bit 1 (PM11) of port mode register 1: Set to 1
Bit 2 (PM12) of port mode register 1: Cleared to 0
Bit 0 (PM10) of port mode register 1: Set to 1
Bit 2 (P12) of port 1: Cleared to 0
(b) To use internal clock as system clock (SCK10)
Bit 1 (PM11) of port mode register 1: Set to 1
Bit 2 (PM12) of port mode register 1: Cleared to 0
Bit 0 (PM10) of port mode register 1: Cleared to 0
Bit 2 (P12) of port 1: Cleared to 0
Bit 0 (P10) of port 1: Set to 1
<2>
Receive mode (with transmission disabled)
(a) To use externally input clock as system clock (SCK10)
Bit 1 (PM11) of port mode register 1: Set to 1
Bit 0 (PM10) of port mode register 1: Set to 1
(b) To use internal clock as system clock (SCK10)
Bit 1 (PM11) of port mode register 1: Set to 1
Bit 0 (PM10) of port mode register 1: Cleared to 0
Bit 0 (P10) of port 1: Set to 1
Remark
The transmit/receive mode or receive mode is selected by using bit 6 (TRMD10) of serial operation
mode register 10 (CSIM10).