373CHAPTER 18 SERIAL INTERFACE CHANNEL 0 (μPD78078Y Subseries)(1) Timer clock select register 3 (TCL3)This register sets the serial clock of serial interface channel 0.TCL3 is set with an 8-bit memory manipulation instruction.RESET input sets TCL3 to 88H.Figure 18-3. Timer Clock Select Register 3 FormatCaution When rewriting TCL3 to other data, stop the serial transfer operation beforehand.Remarks 1. f XX : Main system clock frequency (f X or f X /2)2. f X : Main system clock oscillation frequency3. MCS : Bit 0 of oscillation mode selection register (OSMS)4. Figures in parentheses apply to operation with f X = 5.0 MHz.Serial Interface Channel 0 Serial Clock SelectionTCL33 TCL32 TCL31 TCL3000111111110000111100110001010101f XX/25f XX/26f XX/27f XX/28f XX/29f XX/210f XX/211f XX/212MCS = 1Setting prohibitedf X/26 (78.1 kHz)f X/27 (39.1 kHz)f X/28 (19.5 kHz)f X/29 (9.77 kHz)f X/210 (4.88 kHz)f X/211 (2.44 kHz)f X/212 (1.22 kHz)M CS = 1Setting prohibitedf X/22 (1.25 MHz)f X/23 (625 kHz)f X/24 (313 kHz)f X/25 (156 kHz)f X/26 (78.1 kHz)f X/27 (39.1 kHz)f X/28 (19.5 kHz)Other than above Setting prohibitedSerial Interface Channel 1 Serial Clock SelectionTCL37 TCL36 TCL35 TCL3400111111110000111100110001010101f XX/2f XX/22f XX/23f XX/24f XX/25f XX/26f XX/27f XX/28MCS = 1Setting prohibitedf X/22 (1.25 MHz)f X/23 (625 kHz)f X/24 (313 kHz)f X/25 (156 kHz)f X/26 (78.1 kHz)f X/27 (39.1 kHz)f X/28 (19.5 kHz)MCS = 0f X/22 (1.25 MHz)f X/23 (625 kHz)f X/24 (313 kHz)f X/25 (156 kHz)f X/26 (78.1 kHz)f X/27 (39.1 kHz)f X/28 (19.5 kHz)f X/29 (9.8 kHz)Other than above Setting prohibited6 5 4 3 2 1 07SymbolTCL3 TCL37 TCL36 TCL35 TCL34 TCL33 TCL32 TCL31 TCL30 FF43H 88H R/WAddress After Reset R/WMCS = 0f X/26 (78.1 kHz)f X/27 (39.1 kHz)f X/28 (19.5 kHz)f X/29 (9.77 kHz)f X/210 (4.88 kHz)f X/211 (2.44 kHz)f X/212 (1.22 kHz)f X/213 (0.61 kHz)f XX/2f XX/22f XX/23f XX/24f XX/25f XX/26f XX/27f XX/28MCS = 0f X/22 (1.25 MHz)f X/23 (625 kHz)f X/24 (313 kHz)f X/25 (156 kHz)f X/26 (78.1 kHz)f X/27 (39.1 kHz)f X/28 (19.5 kHz)f X/29 (9.8 kHz)Serial Clock in I 2 C Bus Mode Serial Clock in 2-Wire or 3-WireSerial I/O Mode
