REV. 1.0.3 HIGH PERFORMANCE DUAL PCI EXPRESS UART INT0 [7:0] Channel Interrupt Indicator Each bit gives an indication of the channe" />
參數(shù)資料
型號: XR17V352IB113-F
廠商: Exar Corporation
文件頁數(shù): 9/64頁
文件大?。?/td> 0K
描述: IC UART PCIE 256B DUAL 113FPBGA
產(chǎn)品培訓模塊: PCIe UARTs
標準包裝: 260
特點: *
通道數(shù): 2,DUART
FIFO's: 256 字節(jié)
規(guī)程: RS485
電源電壓: 3.3V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 113-LFBGA
供應商設備封裝: 113-FPBGA
包裝: 托盤
其它名稱: 1016-1471
XR17V352IB113-F-ND
XR17V352
17
REV. 1.0.3
HIGH PERFORMANCE DUAL PCI EXPRESS UART
INT0 [7:0] Channel Interrupt Indicator
Each bit gives an indication of the channel that has requested for service. Bit [0] represents channel 0 and
bit [1] indicates channel 1. All other bits are reserved. Logic 1 indicates the channel N [1:0] has called for
service. The interrupt bit clears after reading the appropriate register of the interrupting channel register, see
Interrupt Clearing section.
The INT0 register provides individual status for each channel
INT0 Register
Individual UART Channel Interrupt Status
Bit-3 Bit-2 Bit-1 Bit-0
Bit-4
Bit-5
Bit-6
Bit-7
0
Ch-1 Ch-0
INT3, INT2 and INT1 [31:8] 3-bit Channel Interrupt Encoding
Each channel’s interrupt is encoded into 3 bits for receive, transmit, and status. Bits [10:8] represent channel 0
and go up to channel 1 with bits [13:11]. The 3-bit encoding and their priority order are shown below in Table 7.
The wake-up interrupt, timer/counter interrupt and MPIO interrupt are only reported in channel 0 of INT1
(bits[10:8]). These interrupts are not reported in any other location.
FIGURE 4. THE GLOBAL INTERRUPT REGISTER, INT0, INT1, INT2 AND INT3
Reserved
Channel-1
Channel-0
INT2 Register
INT1 Register
INT3 Register
INT0 Register
Interrupt Registers,
INT0, INT1, INT2 and INT3
Ch-0
Ch-1
0
00
0
Bit-3 Bit-2 Bit-1 Bit-0
Bit
N+1
Bit
N+2
Bit
N
Bit
N+1
Bit
N+2
Bit
N
0
00
0
00
0
00
0
00
0
00
0
00
Bit-7 Bit-6 Bit-5 Bit-4
Reserved
TABLE 7: UART CHANNEL [1:0] INTERRUPT SOURCE ENCODING
PRIORITY
BIT[N+2]
BIT[N+1]
BIT[N]
INTERRUPT SOURCE(S)
x
0
None or wake-up indicator (wake-up indicator is reported in channel 0 only)
1
0
1
RXRDY and RX Line Status (logic OR of LSR[4:1])
2
0
1
0
RXRDY Time-out
3
0
1
TXRDY, THR or TSR (auto RS485 mode) empty
4
1
0
MSR, RTS/CTS or DTR/DSR delta or Xoff/Xon det. or special char. detected
5
1
0
1
Reserved.
6
1
0
MPIO pin(s). Reported in channel 0 only.
7
1
Timer/Counter. Reported in channel 0 only.
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