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參數(shù)資料
| 型號： | SP37E760 |
| 廠商： | SMSC Corporation |
| 英文描述： | 3.3 V I/O CONTROLLER FOR EMBEDDED APPLICATIONS |
| 中文描述： | 3.3第VI / O控制器為嵌入式應用 |
| 文件頁數(shù)： | 56/78頁 |
| 文件大?。?/td> | 510K |
| 代理商： | SP37E760 |
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SMSC DS – SP37E760
Rev. 04/13/2001
Table 44 - CR25: UART2 Base Address Register
DB5
DB4
ADR7
ADR6
DB7
ADR9
DB6
ADR8
DB3
ADR5
DB2
ADR4
DB1
ADR3
DB0
0
7.3.32 CR26
CR26 can only be accessed in the Configuration State and after the CSR has been initialized to 26H. The default
value of this register after power up is 00H (Table 45). CR26 is used to select the DMA for the Parallel Port (bits 0 -
3). Any unselected DMA Request output (DRQ) is in tristate.
Table 45 - CR26: PP DMA Selection Register
D3-D0
0000
0001
0010
0011
DMA SELECTED
None
DMA_A
DMA_B
DMA_C
7.3.33 CR27
CR27 can only be accessed in the configuration state and after the CSR has been initialized to 27H. The default
value of this register after power up is 00H (Table 46). CR27 is used to select the Parallel Port (bits 3 - 0). Any
unselected IRQ output (registers CR27 - CR29) is in tristate.
Table 46 - CR27: PP IRQ Selection Register
D3-D0
0000
0001
0010
0011
0100
0101
0110
0111
1000
IRQ SELECTED
None
IRQ_A
IRQ_B
IRQ_C
IRQ_D
IRQ_E
IRQ_F
Reserved
IRQ_H
7.3.34 CR28
CR28 can only be accessed in the configuration state and after the CSR has been initialized to 28H. The default
value of this register after power up is 00H. CR28 is used to select the IRQ for Serial Port 1 (bits 7 - 4) and for Serial
Port 2 (bits 3 - 0). Refer to the IRQ encoding for CR27 (Table 46)
.
Any unselected IRQ output (registers CR27 -
CR29) is in tristate.
To properly share an IRQ between UART1 and UART2:
1. Configure UART1 to use the desired IRQ pin.
2. Set UART2 to 0FH i.e., set CR28.[3:0] = 1111b. This selects the share IRQ mechanism. Refer to Table 47,
below.
Table 47 - UART Interrupt Operation
UART1
UART2
UART1
OUT2 bit
Output State
OUT2 bit
Output State
0
Z
0
Z
1
asserted
0
Z
1
de-asserted
0
Z
0
Z
1
asserted
0
Z
1
de-asserted
1
asserted
1
asserted
IRQ PINS
UART1 IRQ
UART2
UART2 IRQ
Share
IRQ
UART1
Pin State
Z
1
0
Z
Z
1
UART2
Pin State
Z
Z
Z
1
0
1
No
No
No
No
No
No
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP37E760-MC | 制造商:SMSC 制造商全稱:SMSC 功能描述:3.3 V I/O CONTROLLER FOR EMBEDDED APPLICATIONS |
| SP37E760-MD | 功能描述:輸入/輸出控制器接口集成電路 Super I/O Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| SP37E760-MT | 功能描述:輸入/輸出控制器接口集成電路 Super I/O Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| SP37R0FL | 制造商:TE Connectivity 功能描述:SP3 7R0 1% LOOSEFixed Resistor |
| SP38 | 制造商:BES 功能描述:3/8" x 6" Spade Bit 制造商:BES MANUFACTURING 功能描述:SPADE BIT 3/8 X 6 INCH |
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