NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 491 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
[7:6]
RXTRGLV
Rx Buffer Trigger Level
When the number of bytes in the receiving buffer equals the RXTRGLV, the RDAIF will be
set (if SC_INTEN[RDAIEN] is enabled, an interrupt will be generated).
00 = INTR_RDA Trigger Level with 01 Bytes.
01 = INTR_RDA Trigger Level with 02 Bytes.
10 = INTR_RDA Trigger Level with 03 Bytes.
11 = Reserved.
[5:4]
CONSEL
Convention Selection
00 = Direct convention.
01 = Reserved.
10 = Reserved.
11 = Inverse convention.
Note:
If AUTOCEN (SC_CTL[3]) enabled, this fields are ignored.
[3]
AUTOCEN
Auto Convention Enable Bit
0 = Auto-convention Disabled.
1 = Auto-convention Enabled. When hardware receives TS in answer to reset state and
the TS is direct convention, CONSEL (SC_CTL[5:4]) will be set to 00 automatically,
otherwise if the TS is inverse convention, and CONSEL (SC_CTL[5:4]) will be set to 11.
If software enables auto convention function, the setting step must be done before Answer
to Reset state and the first data must be 0x3B or 0x3F. After hardware received first data
and stored it at buffer, hardware will decide the convention and change the CONSEL
(SC_CTL[5:4]) bits automatically. If the first data is not 0x3B or 0x3F, hardware will
generate an interrupt INT_ACON_ERR (if ACERRIE (SC_INTEN[10]) = 1) to CPU.
[2]
TXOFF
TX Transition Disable Bit
0 = The transceiver Enabled.
1 = The transceiver Disabled.
[1]
RXOFF
RX Transition Disable Bit
0 = The receiver Enabled.
1 = The receiver Disabled.
Note:
If AUTOCEN (SC_CTL[3]) is enabled, this field must be ignored.
[0]
SCEN
SC Engine Enable Bit
Set this bit to 1 to enable SC operation. If this bit is cleared, SC will force all transition to
IDLE state.