Epson E0C6001 Technical Manual page 89

E0C6001 TECHNICAL SOFTWARE
Table 1.4.1(d) I/O memory map 4
Address
D3
XBZR
R/W
0FDH
*1 Initial value following initial reset
*2 Not set in the circuit
*3 Undefined
*4 Reset (0) immediately after being read
*5 Always 0 when being read
*6 Refer to main manual
II-8
Register
D2 D1 D0 Name
0 XFOUT1 XFOUT0 XBZR
0
R R/W
XFOUT1
XFOUT0
SR *1 1 0
0 2 kHz 4 kHz
*5
0 High Low
0 High Low
Comment
Buzzer frequency control
FOUT frequency control:
XFOUT1(0), XFOUT0(0) -> F1
XFOUT1(0), XFOUT0(1) -> F2
XFOUT1(1), XFOUT0(0) -> F3
XFOUT1(1), XFOUT0(1) -> F4