w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 89
w83977atf
Manufacturer Part Number
w83977atf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977ATF.pdf
(207 pages)
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4.6.4 Set4.Reg4, 5 - Transmitter Frame Length (TFRLL/TFRLH)
These are combined to be a 13-bit register. Writing these registers programs the transmitter frame
length of a package.
Set5.Reg4.bit5). When APM=1, the physical layer will split data stream to a programmed frame
length if the transmitted data is larger than the programmed frame length. When these registers are
read, they will return the number of bytes which is not transmitted from a frame length programmed.
4.6.5 Set4.Reg6, 7 - Receiver Frame Length (RFRLL/RFRLH)
These are combined to be a 13-bit register and up counter. The length of receiver frame will be
limited to the programmed frame length. If the received frame length is larger than the programmed
receiver frame length, the bit of MX_LEX (Maximum Length Exceed) will be set to 1. Simultaneously,
the receiver will not receive any more data to RX FIFO until the next start flag of the next frame,
which is defined in the physical layer IrDA 1.1. Reading these registers returns the number of
received data bytes of a frame from the receiver.
4.7 Set 5 - Flow control and IR control and Frame Status FIFO registers
Reset Value
Reset Value
Reset Value
Reset Value
Address Offset Register Name
RFRLL
TFRLL
RFRLH
TFRLH
Reg.
Reg.
0
1
2
3
4
5
6
7
Bit 7
Bit 7
bit 7
bit 7
0
0
-
-
-
-
RFRLFH
RFRLFL
IRCFG1
FCBHL
FC_MD
FCBLL
FS_FO
These registers are only valid when APM=1 (automatic package mode,
SSR
Bit 6
Bit 6
bit 6
bit 6
0
0
-
-
-
-
Flow Control Baud Rate Divisor Latch Register (Low Byte)
Flow Control Baud Rate Divisor Latch Register (High Byte)
Flow Control Mode Operation
Sets Select Register
Infrared Configure Register
Frame Status FIFO Register
Receiver Frame Length FIFO Low Byte
Receiver Frame Length FIFO High Byte
Bit 5
Bit 5
bit 5
bit 5
0
0
-
-
-
-
bit 12
bit 12
Bit 4
Bit 4
bit 4
bit 4
0
0
0
0
- 70 -
Register Description
bit 11
bit 11
Bit 3
Bit 3
bit 3
bit3
0
0
0
0
Publication Release Date:April 1998
bit 10
bit 10
Bit 2
Bit 2
bit 2
bit 2
0
0
0
0
W83977ATF
PRELIMINARY
Bit 1
Bit 1
bit 1
bit 9
bit 1
bit 9
0
0
0
0
Revision 0.52
Bit 0
Bit 0
bit 0
bit 8
bit 0
bit 8
0
0
0
0
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