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| 型號(hào)： | DS33ZH11+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 103/172頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MAPPER ETHERNET 100CSBGA |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 7 |
| 應(yīng)用： | 數(shù)據(jù)傳輸 |
| 接口： | 串行 |
| 電源電壓： | 1.8V，2.5V，3.3V |
| 封裝/外殼： | 100-LFBGA，CSPBGA |
| 供應(yīng)商設(shè)備封裝： | 100-CSBGA（10x10） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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DS33Z11 Ethernet Mapper
36 of 172
8.8 Device Interrupts
Figure 8-2 diagrams the flow of interrupt conditions from their source status bits through the multiple levels of
information registers and mask bits to the interrupt pin. When an interrupt occurs, the host can read the Global
Latched Status registers GL.LIS, GL.SIS, GL.BIS, and GL.TRQIS to initially determine the source of the interrupt.
The host can then read the LI.TQCTLS, LI.TPPSRL, LI.RPPSRL, LI.RX86S, SU.QCRLS, or BSRL registers to
further identify the source of the interrupt(s). In order to maintain software compatibility with the multiport devices
in the product family, the global interrupt status and interrupt enable registers have been preserved, but do not
need to be used. If GL.TRQIS is determined to be the interrupt source, the host will then read the LI.TPPSRL and
LI.RPPSRL registers for the cause of the interrupt. If GL.LIS is determined to be the interrupt source, the host will
then read the LI.TQCTLS, LI.TPPSRL, LI.RPPSRL, and LI.RX86S registers for the source of the interrupt. If
GL.SIS is the source, the host will then read the SU.QCRLS register for the source of the interrupt. If GL.BIS is
the source, the host will then read the BSRL register for the source of the interrupt. All Global Interrupt Status
Register bits are real-time bits that will clear once the appropriate interrupt has been serviced and cleared, as
long as no additional, enabled interrupt conditions are present in the associated status register. All Latched
Status bits must be cleared by the host writing a “1” to the bit location of the interrupt condition that has been
serviced. In order for individual status conditions to transmit their status to the next level of interrupt logic, they
must be enabled by placing a “1” in the associated bit location of the correct Interrupt Enable Register. The
GL.BIE, and GL.TRQIE. Latched Status bits that have been enabled via Interrupt Enable registers are allowed to
pass their interrupt conditions to the Global Interrupt Status Registers. The Interrupt enable registers allow
individual Latched Status conditions to generate an interrupt, but when set to zero, they do not prevent the
Latched Status bits from being set. Therefore, when servicing interrupts, the user should AND the Latched Status
with the associated Interrupt Enable Register in order to exclude bits for which the user wished to prevent
interrupt service. This architecture allows the application host to periodically poll the latched status bits for non-
interrupt conditions, while using only one set of registers. Note the bit-orders of SU.QRIE and SU.QCRLS are
different.
Note that the inactive state of the interrupt output pin is configurable. The INTM bit in GL.CR1 controls the
inactive state of the interrupt pin, allowing selection of a pull-up resistor or active driver.
The interrupt structure is designed to efficiently guide the user to the source of an enabled interrupt source. The
latched status bits for the interrupting entity must be read to clear the interrupt. Also reading the latched status bit
will reset all bits in that register. During a reset condition, interrupts cannot be generated. The interrupts from any
source can be blocked at a global level by the placing a zero in the global interrupt enable registers (GL.LIE,
GL.SIE, GL.BIE, and GL.TRQIE). Reading the Latched Status bit for all interrupt generating events will clear the
interrupt status bit and Interrupt signal will be de-asserted.
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| DS33ZH11+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 10/100 ENETXPORT HMODE MAP IND RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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