w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 67

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

7.2.6
Legacy IR Register: These registers are defined the same as previous description.
Advanced IR Register:
Bit 2:
Bit 1, 0:
Bit 7:
Bit 6, 5:
Bit 4:
Bit 3:
Bit 2:
Bit 1, 0:
Advanced IR
Reset Value
Legacy IR
MODE
Set0.Reg5 - IR Status Register (USR)
MIR, FIR modes:
Other modes: Not used.
MIR, FIR Modes:
MIR, FIR modes:
MIR, FIR modes:
MIR, FIR Modes:
EN_DMA - Enable DMA
Enable DMA function for transmitting or receiving. Before using this, the DMA channel
should be selected first. If only RX DMA channel is set and TX DMA channel is disabled,
then the single DMA channel is used. In the single channel system, the bit of D_CHSW
(DMA channel swap, in Set 2.Reg2.Bit3) will determine if it is RX_DMA or TX_DMA
channel.
RTS, DTR
Functional definitions are the same as in legacy IR mode.
LB_INFR - Last Byte In Frame End
Set to 1 when last byte of a frame is in the bottom of FIFO. This bit separates one frame
from another when RX FIFO has more than one frame.
Same as legacy IR description.
MX_LEX - Maximum Frame Length Exceed
Set to 1 when the length of a frame from the receiver has exceeded the programmed
frame length defined in SET4.Reg6 and Reg5. If this bit is set to 1, the receiver will not
receive any data to RX FIFO.
PHY_ERR - Physical Layer Error
Set to 1 when an illegal data symbol is received. The illegal data symbol is defined in
physical layer of IrDA version 1.1. When this bit is set to 1, the decoder of receiver will
be aborted and a frame end signal is set to 1.
CRC_ERR - CRC Error
Set to 1 when an attached CRC is erroneous.
OER - Overrun Error, RDR - RBR Data Ready
Definitions are the same as legacy IR.
LB_INFR
RFEI
B7
0
TSRE
TSRE
B6
0
TBRE
TBRE
B5
0
MX_LEX
- 59 -
SBD
B4
0
W83977ATF/W83977ATG
PHY_ERR CRC_ERR
NSER
B3
0
Publication Release Date: May 2006
PBER
B2
0
OER
OER
B1
0
Revision 0.6
RDR
RDR
B0
0