w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 70
w83977atf
Manufacturer Part Number
w83977atf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977ATF.pdf
(207 pages)
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4.0 INFRARED (IR) PORT
The Infrared (IR) function provides a point-to-point (or multi-point to multi-point) wireless
communication which can operate under various transmission protocols including IrDA 1.0 SIR, IrDA
1.1 MIR (1.152 Mbps), IrDA 1.1 FIR (4 Mbps), SHARP ASK-IR, and remote control (NEC, RC-5,
advanced RC-5, and RECS-80 protocol).
4.1 IR Register Description
When bank select enable bit (ENBNKSEL, the bit 0 in CRF0 of logic device 6) is set, legacy IR will be
switched to Advanced IR, and eight Register Sets can then be accessible. These Register Sets
control enhanced IR, SIR, MIR, or FIR.
enhanced features such as 32-byte transmitter/receiver FIFOs, non-encoding IRQ identify status
register, and automatic flow control. The MIR/FIR and remote control registers are also defined in
these Register Sets. Structure of these Register Sets is as shown below.
Each of these register sets has a common register, namely Sets Select Register (SSR), in order to
switch to another register set. The summary description of these Sets is given below.
*Set 0, 1 are legacy/Advanced UART Registers
*Set 2~7 are Advanced UART Registers
BDL/SSR
Reg 7
Reg 6
Reg 5
Reg 4
Reg 2
Reg 1
Reg 0
Set 0
Set 1
Set 2
Set 3
Set 4
Set 5
Also,
Set 6
a superior traditional SIR function can be used with
Set 7
- 51 -
All in one Reg
to Select SSR
Publication Release Date:April 1998
W83977ATF
PRELIMINARY
Revision 0.52
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