W83977F-A Datasheet, PDF (63/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
7.2.4 Set0.Reg3 - IR Control Register/Set Select Register (UCR/SSR):
These two registers share the same address. In all Register Sets, Set Select Register (SSR) can be
programmed to select a desired Set but IR Control Register can only be programmed in Set 0 and Set
1. In other words, writing to Reg3 in Sets other than Set 0 and Set 1 will not affect IR Control
Register. The mapping of entry Set and programming value is shown as follows.
SSR BITS
SELECTED
7
6
5
4
3
2
1
0 Hex Value
Set
0
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¡Ñ
¡Ñ
¡Ñ
¡Ñ
¡Ð
Set 0
1
Any combination except those used in SET 2~7
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Set1
1
1
1
0
0
0
0
0
0xE0
Set 2
1
1
1
0
0
1
0
0
0xE4
Set 3
1
1
1
0
1
0
0
0
0xE8
Set 4
1
1
1
1
1
1
0
0
0xEC
Set 5
1
1
1
1
0
0
0
0
0xF0
Set 6
1
1
1
1
0
1
0
0
0xF4
Set 7
7.2.5 Set0.Reg4 - Handshake Control Register (HCR)
MODE
B7
B6
B5
B4
B3
B2
B1
B0
Legacy IR
0
0
0
XLOOP EN_IRQ
0
0
0
Advanced IR AD_MD2 AD_MD1 AD_MD0 SIR_PLS TX_WT EN_DMA
0
0
Reset Value
0
1
1
0
0
0
0
0
Legacy IR Register:
This register controls the pins of IR used for handshaking with peripherals such as modem, and
controls the diagnostic mode of IR.
Bit 4: When this bit is set to logical 1, the legacy IR enters diagnostic mode by an internal loopback:
IRTX is forced to logical 0, and IRRX is isolated from the communication link instead of the
TSR.
Bit 3: The legacy IR interrupt output is enabled by setting this bit to logic 1.
Advanced IR Register:
Bit 7~5 Advanced SIR/ASK-IR, MIR, FIR, Remote Controller Modes:
AD_MD2~0 - Advanced IR/Infrared Mode Select.
These registers are active when Advanced IR Select (ADV_SL, in Set2.Reg2.Bit0) is set
to 1. Operational mode selection is defined as follows. When backward operation
occurs, these registers will be reset to 0 and fall back to legacy IR mode.
Publication Release Date: May 2006
-55 -
Revision 0.60