Epson 0C88832 Technical Manual page 29

Address Bit Name
00FF45 D7 –
–
D6 DUTY2
Buzzer signal duty ratio selection
D5 DUTY1
D4 DUTY0
D3 –
–
D2 BZFQ2
Buzzer frequency selection
D1 BZFQ1
D0 BZFQ0
00FF48 D7 –
–
D6 EPR
Parity enable register
D5 PMD
Parity mode selection
D4 SCS1 Clock source selection
D3 SCS0
D2 SMD1 Serial I/F mode selection
D1 SMD0
D0 ESIF Serial I/F enable register
00FF49 D7 – –
D6 FER Framing error flag
D5 PER Parity error flag
D4 OER Overrun error flag
D3 RXTRG
Receive trigger/status
D2 RXEN
Receive enable
D1 TXTRG
Transmit trigger/status
D0 TXEN
Transmit enable
E0C88832/88862 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Table 5.1.1(f) I/O Memory map (00FF45H–00FF49H)
Function
DUTY2–1 Buzzer frequency (Hz)
4096.0 3276.8 2730.7
2 1 0
2048.0 1638.4 1365.3
0 0 0 8/16 8/20 12/24
0 0 1 7/16 7/20 11/24
0 1 0 6/16 6/20 10/24
0 1 1 5/16 5/20
1 0 0 4/16 4/20
1 0 1 3/16 3/20
1 1 0 2/16 2/20
1 1 1 1/16 1/20
BZFQ2 BZFQ1 BZFQ0 Frequency (Hz)
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
SCS1 SCS0 Clock source
1 1 Programmable timer
1 0 f / 4
OSC3
0 1 f / 8
OSC3
0 0 f / 16
OSC3
SMD1 SMD0 Mode
1 1 Asynchronous 8-bit
1 0 Asynchronous 7-bit
0 1 Clock synchronous slave
0 0 Clock synchronous master
1
–
2340.6
1170.3
12/28
11/28
10/28
9/24 9/28
8/24 8/28
7/24 7/28
6/24 6/28
5/24 5/28
–
4096.0
3276.8
2730.7
2340.6
2048.0
1638.4
1365.3
1170.3
–
With parity
Odd
Serial I/F
–
R
Error
W
Reset (0)
R
Error
W
Reset (0)
R
Error
W
Reset (0)
R
Run
W
Trigger
Enable
R
Run
W
Trigger
Enable
EPSON
0 SR R/W
–
– "0" when being read
0 R/W
0 R/W
0 R/W
–
– "0" when being read
0 R/W
0 R/W
0 R/W
–
– "0" when being read
0 R/W
Non parity Only for
0 R/W asynchronous mode
Even
0 R/W
In the clock synchro-
nous slave mode,
external clock is
0 R/W
selected.
0 R/W
0 R/W
0 R/W
I/O port
–
– "0" when being read
0 R/W
No error Only for
asynchronous mode
No operation
0 R/W
No error
No operation
0 R/W
No error
No operation
0 R/W
Stop
No operation
0 R/W
Disable
0 R/W
Stop
No operation
0 R/W
Disable
Comment
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