w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 80
w83977atf
Manufacturer Part Number
w83977atf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977ATF.pdf
(207 pages)
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Legacy IR Register:
This is a temporary register that can be accessed and defined by the user.
Advanced IR Register:
Bit 7
Bit 6
Bit 5
Bit 4:
Legacy IR
Advanced
4.2.8 Set0.Reg7 - User Defined Register (UDR/AUDR)
Reset Value
Mode
IR
MIR, FIR Modes:
MIR, FIR Modes:
MIR, FIR Modes:
Remote IR mode:
MIR, FIR modes:
Remote IR Modes:
FLC_ACT UNDRN
FLC_ACT - Flow Control Active
Set to 1 when the flow control occurs. Cleared to 0 when this register is read. Note that
this will be affected by Set5.Reg2 which controls the SIR mode switches to MIR/FIR
mode or MIR/FIR mode operated in DMA function switches to SIR mode.
UNDRN - Underrun
Set to 1 when transmitter is empty and S_FEND (bit 3 of this register) is not set in PIO
mode or no TC (Terminal Count) in DMA mode. Cleared to 0 after a write to 1.
RX_BSY - Receiver Busy
Set to 1 when receiver is busy or active in process.
RX_IP - Receiver in Process
Set to 1 when receiver is in process.
LST_FE - Lost Frame End
Set to 1 when a frame end in a entire frame is lost. Cleared to 0 when this register is
read.
RX_PD - Receiver Pulse Detected
Set to 1 when one or more remote pulses are detected. Cleared to 0 when this register is
read.
Bit 7
Bit 7
0
Bit 6
Bit 6
0
RX_BSY/
RX_IP
Bit 5
Bit 5
0
LST_FE/
RX_PD
Bit 4
Bit 4
- 61 -
0
S_FEND
Bit 3
Bit 3
0
Publication Release Date:April 1998
Bit 2
Bit 2
0
0
W83977ATF
PRELIMINARY
LB_SF
Bit 1
Bit 1
0
Revision 0.52
RX_TO
Bit 0
Bit 0
0
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