W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 63

• Manufacturer Part Number: W83977G
• Description: W83877TF plus KBC, CIR, RTC, Pb-free
• Manufacturer: Winbond Electronics Corp America

7.2.4
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.
7.2.5
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:
Bit 3: The legacy IR interrupt output is enabled by setting this bit to logic 1.
Advanced IR Register:
Bit 7~5
Advanced IR
Reset Value
Legacy IR
7
0
1
1
1
1
1
1
1
MODE
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
IRTX is forced to logical 0, and IRRX is isolated from the communication link instead of the
TSR.
Advanced SIR/ASK-IR, MIR, FIR, Remote Controller Modes:
Set0.Reg3 - IR Control Register/Set Select Register (UCR/SSR):
Set0.Reg4 - Handshake Control Register (HCR)
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6
1
1
1
1
1
1
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.
occurs, these registers will be reset to 0 and fall back to legacy IR mode.
AD_MD2
B7
0
0
Operational mode selection is defined as follows.
Any combination except those used in SET 2~7
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5
1
1
1
1
1
1
AD_MD1
B6
0
1
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4
0
0
0
1
1
1
AD_MD0
SSR BITS
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B5
3
0
0
1
1
0
0
0
1
-55 -
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SIR_PLS
2
0
1
0
1
0
1
XLOOP
B4
0
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1
0
0
0
0
0
0
EN_IRQ
TX_WT
B3
0
Publication Release Date: May 2006
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0
0
0
0
0
0
0
EN_DMA
When backward operation
B2
Hex Value
0
0
0xEC
0xE0
0xE4
0xE8
0xF0
0xF4
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B1
0
0
0
SELECTED
Revision 0.60
Set 0
Set 2
Set 3
Set 4
Set 5
Set 6
Set 7
Set1
Set
B0
0
0
0