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| 型号： | DS26334GN |
| 英文描述： | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
| 中文描述： | 3.3伏，16路，E1/T1/J1短，长途线路接口单元 |
| 文件页数： | 19/115页 |
| 文件大小： | 756K |
| 代理商： | DS26334GN |
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DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
19 of 115
Figure 5-3. Serial Port Operation for Read Access with CLKE = 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0
A1
A2
A3
A4
A5
D1
D2
D3
D4
D5
D6
SCLK
SDI
SDO
CSB
(lsb)
(msb)
D0
(lsb)
D7
(msb)
A6
X
5.1.2 Parallel Port Operation
When using the parallel interface on the DS26334 the user has the option for either multiplexed bus operation or
nonmultiplexed bus operation. The ALE pin is pulled high in nonmultiplexed bus operation. The DS26334 can
operate with either Intel or Motorola bus-timing configurations selected by MOTEL pin. This pin being high selects
the Intel mode. The parallel port is only operational if MODESEL pin is pulled high. The following Table lists all the
pins and their functions in the parallel port mode. See the timing diagrams in Section
9
for more details.
Table 5-1. Parallel Port Mode Selection and Pin Functions
MODESEL, MOTEL,
MUX
100
110
101
111
PARALLEL HOST
INTERFACE
Nonmultiplexed Motorola
Nonmultiplexed Intel
Multiplexed Motorola
Multiplexed Intel
ADDRESS, DATA, AND CONTROL
CSB, ACKB, DSB, RWB, ASB, A [5:0], D [7:0], INTB
CSB, RDYB, WRB, RDB, ALE, A [5:0], D [7:0], INTB
CSB, ACKB, DSB, RWB, ASB, AD [7:0], INTB
CSB, RDYB, WRB, RDB, ALE, AD [7:0], INTB
5.1.3 Interrupt Handling
There are four sets of events that can potentially trigger an Interrupt. The interrupt functions as follows:
When status changes on an interruptible event, INTB pin will go low if the event is enabled through the
corresponding Interrupt Enable Register. The INTB has to be pulled high externally with a 10k resister for
wired-OR operation. If a wired-OR operation is not required, the INTB pin can be configured to be high when
not active by setting register
GISC.INTM
.
When an Interrupt occurs the Host Processor has to read the Interrupt Status register to determine the source
of the Interrupt. The read will also clear the Interrupt Status register and this will clear the output INTB pin. The
Interrupt Status register can also be configured as clear on write as per register
GISC.CWE
. When set to clear
on write, and interrupt status register bit (and the interrupt it generates) will only be cleared on writing a ‘1’ to
it’s bit location in the interrupt status register. This makes is possible to clear interrupts on some bits in a
register without clearing them on all bits.
Subsequently the host processor can read the corresponding Status Register to check the real-time status of
the event.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS26334GN+ | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GNA2 | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GNA2+ | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GNA3 | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26334GNA3+ | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
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