W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 64

• Manufacturer Part Number: W83977AF
• Description: W83877TF Plus Kbc, Cir, RTC
• Manufacturer: Information Storage Devices, Inc

4. INFRARED (IR) PORT
The Infrared (IR) function provides 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. Also a superior traditional SIR function can be used with
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 shown as follows.
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 shown in the following.
Set
0
1
2
3
4
5
6
7
Legacy/Advanced IR Control and Status Registers.
Legacy Baud Rate Divisor Register.
Advanced IR Control and Status Registers.
Version ID and Mapped Control Registers.
Transmitter/Receiver/Timer Counter Registers and IR Control Registers.
Flow Control and IR Control and Frame Status FIFO Registers.
IR Physical Layer Control Registers
Remote Control and IR front-end Module Selection Registers.
*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
- 52 -
Set 6
Sets Description
Set 7
W83977F/ W83977AF
Publication Release Date: March 1998
All in one Reg
to Select SSR
PRELIMINARY
Revision 0.58