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UART/IrDA/CIR Integration
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19.3.1.3 Software Reset
The UARTi.
[1] SOFTRESET bit controls the software reset; writing 1 to this bit triggers a
software-reset functionally equivalent to hardware reset.
19.3.1.4 Power Domain
Each UART in the CORE or PER power domain can dynamically switch between available voltage levels
(see
Table 19-13. Power Domain
Peripherals
Power Domain
UART1
CORE
UART2
CORE
UART3
PER
UART4
PER
19.3.2 Hardware Requests
19.3.2.1 Interrupts
describes the UART interrupt mappings.
Table 19-14. Interrupt Mapping to MPU Subsystem
IRQ
Source
Description
M_IRQ_72
UART1_IRQ
UART module 1 interrupt to MPU
M_IRQ_73
UART2_IRQ
UART module 2 interrupt to MPU
M_IRQ_74
UART3_IRQ
UART module 3 interrupt to MPU
M_IRQ_80
UART4_IRQ
UART module 4 interrupt to MPU
Table 19-15. Interrupt Mapping to IVA2.2 Subsystem
IRQ
SOURCE
DESCRIPTION
IVA2_IRQ[15]
UART3_IRQ
UART module 3 interrupt to IVA2.2 subsystem
19.3.2.2 DMA Requests
describes the UART DMA requests.
Table 19-16. UART DMA Requests to System DMA
DMA
(1)
Source
Description
S_DMA_48
UART1_DMA_TX
UART module 1 transmit request
S_DMA_49
UART1_DMA_RX
UART module 1 receive request
S_DMA_50
UART2_DMA_TX
UART module 2 transmit request
S_DMA_51
UART2_DMA_RX
UART module 2 receive request
S_DMA_52
UART3_DMA_TX
UART module 3 transmit request
S_DMA_53
UART3_DMA_RX
UART module 3 receive request
S_DMA_80
UART4_DMA_TX
UART module 4 transmit request
S_DMA_81
UART4_DMA_RX
UART module 4 receive request
(1)
This table assumes that DMA mode 1 is used.
2888
UART/IrDA/CIR
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated