Pike
Technical
Manual
V5.2.3
169
Description of the data path
Description
of
the
data
path
Offset
Name
Field
Bit
Description
000h
SERIAL_MODE_REG
Baud_Rate
[0
to
7]
Baud
rate
setting
WR:
Set
baud
rate
RD:
Read
baud
rate
0:
300
bps
1:
600
bps
2:
1200
bps
3:
2400
bps
4:
4800
bps
5:
9600
bps
6:
19200
bps
7:
38400
bps
8:
57600
bps
9:
115200
bps
10:
230400
bps
Other
values
reserved
Char_Length
[8
to
15] Character
length
setting
WR:
Set
data
length
(7
or
8
bit)
RD:
Get
data
length
7:
7
bits
8:
8
bits
Other
values
reserved
Parity
[16
to
17] Parity
setting
WR:
Set
parity
RD:
Get
parity
setting
0:
None
1:
Odd
2:
Even
Stop_Bit
[18
to
19] Stop
bits
WR:
Set
stop
bit
RD:
Get
stop
bit
setting
0:
1
1:
1.5
2:
2
---
[20
to
23] Reserved
Buffer_Size_Inq [24
to
31] Buffer
Size
(RD
only)
This
field
indicates
the
maximum
size
of
receive/transmit
data
buffer.
If
this
value=1,
Buffer_Status_Control
and
SIO_Data_Register
Char
1-3
should
be
ignored.
Table 65: Serial input/output control and status register (SIO CSR)