W83L517D_05 Datasheet, PDF (62/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
RXFTL1, 0
(BIT 7, 6)
00
01
10
11
RX FIFO THRESHOLD LEVEL
(FIFO SIZE: 16-BYTE)
1
4
8
14
RX FIFO THRESHOLD LEVEL
(FIFO SIZE: 32-BYTE)
1
4
16
26
Bit 5, 4:
Note that the FIFO Size is selectable in SET2.Reg4.
TXFTL1, 0 - Transmitter FIFO Threshold Level
TXTH_I (Transmitter Threshold Level Interrupt) is set to 1 when the Transmitter
Threshold Level is less than the programmed value shown below.
TXFTL1, 0
(BIT 5, 4)
00
01
10
11
TX FIFO THRESHOLD
LEVEL
(FIFO SIZE: 16-BYTE)
1
3
9
13
TX FIFO THRESHOLD
LEVEL
(FIFO SIZE: 32-BYTE)
1
7
17
25
Same as in Legacy IR Mode
Bit 3 ~0
8.2.4 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 below.
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