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SIO1007 数据表(PDF) 75 Page - Microchip Technology

部件名 SIO1007
功能描述  LPC Super I/O LPC IrDA Hot Docking Chip with UART
PDF  108 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

SIO1007 数据表(HTML) 75 Page - Microchip Technology

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 2005 - 2015 Microchip Technology Inc.
DS00002020A-page 75
SIO1007
18.4.40
CR29
CR29 can only be accessed in the configuration state and after the CSR has been initialized to 29H. CR29 controls the
HPMODE bit and is used to select the IRQ mapping (bits 0 - 3) for the IRQIN1 pin. The four bit IRQ encoding field is
defined in Table 18-32, "IRQ Encoding". Any unselected IRQ output (registers CR28 - CR2A) is in tristate. Shared IRQs
are not supported in the SIO1007.
0110
IRQ_6
0111
IRQ_7
1000
IRQ_8
1001
IRQ_9
1010
IRQ_10
1011
IRQ_11
1100
IRQ_12
1101
IRQ_13
1110
IRQ_14
1111
IRQ_15
TABLE 18-33: UART INTERRUPT OPERATION
UART1
UART2
IRQ Pins
UART1
OUT2 Bit
UART1 IRQ
Output State
UART2
OUT2 Bit
UART2 IRQ
Output State
UART1
Pin State
UART2
Pin State
0Z
0
Z
Z
Z
1asserted
0
Z
1
Z
1
de-asserted
0
Z
0
Z
0
Z
1
asserted
Z
1
0
Z
1
de-asserted
Z
0
1
asserted
1
asserted
1
1
1
asserted
1
de-asserted
1
0
1
de-asserted
1
asserted
0
1
1
de-asserted
1
de-asserted
0
0
Note:
It is the responsibility of the software to ensure that two IRQ’s are not set to the same IRQ number.
Potential damage to chip may result. Note: Z = Don’t Care.
TABLE 18-34: CR29
IRQIN1/HPMODE/SIRQ_CLKRUN_EN
Type: R/W
Default: 0X80 ON VCC POR
BIT NO.
BIT NAME
DESCRIPTION
0-3
IRQIN1
Selects the IRQ for IRQIN1. (See Application Note in the Routable IRQ
Inputs Section 12.2.)
4HPMODE
See Figure 10-1– Infrared Interface Block Diagram
0
Select IRMODE (default)
1
Select IRRX3
5-6
RESERVED
Not Writeable, Reads Return “0”
7
SIRQ_CLKRUN_EN Serial IRQ and CLKRUN enable bit. 0 = Disable
1 = Enable (default)
TABLE 18-32: IRQ ENCODING (CONTINUED)
Bits [3:0] Or Bits [7:4]
IRQ Selected



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