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Unibrain Fire-i 530/630/830 Operation Manual Page 51
Write : 0: Clear flag 1: Ignored
PER [14] Receive data parity error
Read : Current status
Write : 0: Clear flag 1: Ignored
- [15] Reserved
008h Receive_Buffer_Sta
tus_Control
RBUF_ST [0..8] SIO receive buffer status
Read :
Valid data size of current receive buffer
Write : Ignored
RBUF_CNT [8..15] SIO receive buffer control
Read : Remain data size for read
Write : Set input data size
- [16..31] Reserved
00Ch Transmit_Buffer_St
atus_Control
TBUF_ST [0..7] SIO ouput buffer status
Read :
Available data space of transmit buffer
Write : Ignored
TBUF_CNT [8..15] SIO output buffer control
Read : Written data size to buffer
Write : Set output data size for transmit
- [16..31] Reserved
010h
..
0FFh
Reserved
100h SIO_Data_Register Char_0 [0..7] Chracter_0
Read : Read character from receive buffer
Padding data, if data is not available
Write : Character to transmit buffer
padding data if data is invalid
Char_1 [8..15] Chracter_1
Read : Read character from receive buffer
+1 Padding data, if data is not available
Write : Character to transmit buffer +1
padding data if data is invalid
Char_2 [8..15] Chracter_2
Read : Read character from receive buffer
+2 Padding data, if data is not available
Write : Character to transmit buffer +2
padding data if data is invalid
Char_3 [16..31] Chracter_3
Read : Read character from receive buffer
+3 Padding data, if data is not available
Write : Character to transmit buffer +3
padding data if data is invalid
104h
..
1FFh
SIO_Data_Register
_Alias
[0..31] Alias SIO_Data_Register area for block
transfer