Description of the data path
GUPPY Technical Manual
V4.0.1
94
The following registers provide an overview:
Offset
Name
Field
Bit
Description
000h
SERIAL_MODE_REG
Baud_Rate
[0..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..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..17] Parity setting
WR: Set parity
RD: Get parity setting
0: None
1: Odd
2: Even
Stop_Bit
[18..19] Stop bits
WR: Set stop bit
RD: Get stop bit setting
0: 1; 1: 1.5; 2: 2
-
[20..23] Reserved
Buffer_Size_Inq [24..31] Buffer Size (RD only)
This field indicates the maximum size of
receive/transmit data buffer
If this field is 1, Buffer_Status_Control
and SIO_Data_Reg. Char 1-3 should be
ignored
Table 31: SIO CSR