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參數(shù)資料
型號: W83877AF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數(shù): 67/171頁
文件大小: 1634K
代理商: W83877AF
W83877AF
Publication Release Date: Sep. 1996
Preliminary Version 0.50
- 65 -
Bit 3:
ALOOP - All mode Loopback
Write to 1, then enable loopback in all modes.
Bit 2:
DMATHL - DMA Threshold Level
Set DMA threshold level as shown below table.
DMATHL
TX FIFO Threshold
16-Byte
13
RX FIFO Threshold
(16/32-Byte)
4
32-Byte
13
0
1
23
7
10
Bit 1:
DMA_F - DMA Fairness
DMA_F
Function Description
0
1
DMA request (DREQ) is forced inactive after 10.5us
No effect DMA request.
Bit 0:
ADV_SL - Advanced mode Select
Write to 1, then advanced mode is selected.
4.3.4.3 Reg3 - Sets Select Register (SSR)
Read this register that returns E0
16
. Write it to select other register Set.
Reg.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SSR
SSR7
SSR6
SSR5
SSR4
SSR3
SSR2
SRR1
SRR0
default Value
1
1
1
0
0
0
0
0
4.3.4.4 Reg4 - Advanced UART Control Register 2 (ADCR2)
Mode
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Advanced
UART
DIS_BAC
K
-
PR_DIV1 PR_DIV0 RX_FSZ1 RX_FSZ0 TX_FSZ1
TXFSZ0
Reset Value
0
0
0
0
0
0
0
0
Bit 7:
DIS_BACK - Disable Backward Operation
Write to 1, read
or
write BLL or BHL (Baud rate Divisor Latch Register, in Set1.Reg0~1)
will is disable backward legacy UART mode. When use legacy SIR/ASK-IR mode, this bit
should be set to 1 to avoid backward operation.
Reserved,
write 0.
Bit 6:
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相關代理商/技術參數(shù)
參數(shù)描述
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