Nintendo 1504166 - Game Boy Advance SP Edition Console Programming Manual page 144

AGB Programming Manual
Control Register
If Register SIOCNT (d13,d12) = (1,1) is set when Register RCNT (d15) =
(0), you will go to UART communication mode.
Address Register
128h SIOCNT
©1999 - 2001 Nintendo of America Inc.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
1 1
Send Enable Flag
0: Disable
1: Enable
Receive Enable Flag
0: Disable
1: Enable
Interrupt Request Enable Flag
0: Disable
1: Enable
Parity Control
0: Even parity
1: Odd parity
Send Data Flag
0: Not Full
1: Full
Receive Data Flag
0: Not Empty
1: Empty
Error Flag
0: No Error
1: Error
Data Length
0: 7 bits
1: 8 bits
FIFO Enable Flag
0: Disable
1: Enable
Parity Enable Flag
0: Disable
1: Enable
144
Communication Functions
Initial
Attributes
Value
R/W 0000h
Baud Rate
00: 9600bps
01: 38400bps
10: 57600bps
11: 115200bps
CTS Flag
0: Send always possible
1: Send possible during
LOW input to SC terminal
D.C.N. AGB-06-0001-002B4