mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 90

• Manufacturer Part Number: mc68hc05l25
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Time Base
9.5 Time Base Control Register 3
Bit 7 — Reserved
RMON — Remote Control Generator Signal ON
RPOL — Remote Control Idle Polarity
RMPE — Remote Control Generator Port Output Enable
BCLK — Buzzer Clock Select
BZON — Buzzer Signal ON
BPOL — Buzzer Output Polarity
BZPE — Buzzer Output Port Enable
90
This bit is not used and always reads as zero.
When the port is used as remote control output (RMPE = 1), this bit turns on or off the remote control
signal. The idle state is output when cleared and is cleared on reset.
This bit controls the idle state of the remote control generator output on the port and is cleared on reset.
This bit enables the remote control generator output on the port. The actual remote signal on/off is
controlled by RMON bit. This bit is cleared on reset.
This bit selects the buzzer tone output frequency. This bit is cleared on reset.
When the port is used as buzzer output (BZPE = 1), BZON turns on the buzzer signal. Reset clears
BZON.
This bit selects the buzzer output pin’s polarity during buzzer idle (standby) period (BZON = 0). When
BZE = 0, this bit has no effect. This bit is cleared on reset.
This bit controls whether the port functions as buzzer output or a general I/O port. The actual buzzer
signal on/off is controlled by the BZON bit. (See
1 = Carrier on
0 = Carrier off; idle state defined by RPOL as output
1 = Remote idle state outputs logic 1.
0 = Remote idle state outputs logic 0.
1 = Port pin functions as remote control output.
0 = Port pin functions as general I/O port.
1 = OSC/2
0 = OSC/2
1 = Buzzer on
0 = Buzzer off; idle state defined by BPOL as output
1 = Buzzer idle state outputs logic 1.
0 = Buzzer idle state outputs logic 0.
1 = Port pin functions as buzzer output.
0 = Port pin functions as general I/O port.
Address:
Reset:
Read:
Write:
11
10
or XOSC/2
or XOSC/2
$001F
Bit 7
0
0
Figure 9-7. Time Base Control Register 3 (TBCR3)
4
3
= Unimplemented
RMON
selected for buzzer clock
selected for buzzer clock
6
0
MC68HC05L25 Data Sheet, Rev. 3.1
RPOL
5
0
RMPE
Table
4
0
7-1.) This bit is cleared on reset.
BCLK
3
0
BZON
2
0
BPOL
1
0
Freescale Semiconductor
BZPE
Bit 0
0