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| 型号： | DS3112+W |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 83/133页 |
| 文件大小： | 0K |
| 描述： | IC MUX T3/E3 3.3V 256-PBGA |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 40 |
| 控制器类型： | 调帧器，多路复用器 |
| 接口： | 并行/串行 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 电流 - 电源： | 150mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 256-LBGA |
| 供应商设备封装： | 256-PBGA（27x27） |
| 包装： | 管件 |
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DS3112
53 of 133
5.5 T3/E3 Framer Status and Interrupt Register Description
Register Name:
T3E3SR
Register Description:
T3/E3 Status Register
Register Address:
12h
Bit #
7
6
5
4
3
2
1
0
Name
—
RSOF
TSOF
T3IDLE
RAI
AIS
LOF
LOS
Default
—
Bit #
15
14
13
12
11
10
9
8
Name
—
Default
—
Note: See Figure 5-1 for details on the signal flow for the status bits in the T3E3SR register. Bits that are underlined are read-only. All
others are read-write.
Bit 0: Loss Of Signal Occurrence (LOS). This latched read-only alarm-status bit will be set to a one when the T3
or E3 framer detects a loss of signal. This bit will be cleared when read unless a LOS condition still exists. A
change in state of the LOS can cause a hardware interrupt to occur if the LOS bit in the Interrupt Mask for T3E3SR
(IT3E3SR) register is set to a one and the T3E3SR bit in the Interrupt Mask for MSR (IMSR) register is set to a
one. The interrupt will be allowed to clear when this bit is read. The LOS alarm criteria are described in Table 5-1
and Table 5-2.
Bit 1: Loss Of Frame Occurrence (LOF). This latched read-only alarm status bit will be set to a one when the T3
or E3 framer detects a loss of frame. This bit will be cleared when read unless a LOF condition still exists. A
change in state of the LOF can cause a hardware interrupt to occur if the LOF bit in the Interrupt Mask for T3E3SR
(IT3E3SR) register is set to a one and the T3E3SR bit in the Interrupt Mask for MSR (IMSR) register is set to a
one. The interrupt will be allowed to clear when this bit is read. The LOF alarm criteria are described in Table 5-1
and Table 5-2.
Bit 2: Alarm Indication Signal Detected (AIS). This latched read-only alarm-status bit will be set to a one when
the T3 or E3 framer detects an incoming Alarm Indication Signal. This bit will be cleared when read unless an AIS
signal is still present. A change in state of the AIS detection can cause a hardware interrupt to occur if the AIS bit
in the Interrupt Mask for T3E3SR (IT3E3SR) register is set to a one and the T3E3SR bit in the Interrupt Mask for
MSR (IMSR) register is set to a one. The interrupt will be allowed to clear when this bit is read. The AIS alarm
detection criteria is described in Table 5-1 and Table 5-2.
Bit 3: Remote Alarm Indication Detected (RAI). This latched read-only alarm status bit will be set to a one when
the T3 or E3 framer detects an incoming Remote Alarm Indication (RAI) signal. This bit will be cleared when read
unless an RAI signal is still present. A change in state of the RAI detection can cause a hardware interrupt to occur
if the RAI bit in the Interrupt Mask for T3E3SR (IT3E3SR) register is set to a one and the T3E3SR bit in the
Interrupt Mask for MSR (IMSR) register is set to a one. The interrupt will be allowed to clear when this bit is read.
The RAI alarm detection criteria are described in Table 5-1 and Table 5-2. RAI can also be indicated via the FEAC
codes when the device is operated in the C-Bit Parity Mode.
Bit 4: T3 Idle Signal Detected (T3IDLE). This latched read-only alarm status bit will be set to a one when the T3
framer detects an incoming idle signal. This bit will be cleared when read unless the idle signal is still present. A
change in state of idle detection can cause a hardware interrupt to occur if the IDLE bit in the Interrupt Mask for
T3E3SR (IT3E3SR) register is set to a one and the T3E3SR bit in the Interrupt Mask for MSR (IMSR) register is
set to a one. The IDLE detection criteria are described in Table 5-1. The interrupt will be allowed to clear when this
bit is read. When the DS3112 is operated in the E3 mode, this status bit should be ignored.
Bit 5: Transmit T3/E3 Start Of Frame (TSOF). This latched read-only event-status bit will be set to a one on
each T3/E3 transmit frame boundary. This bit is a software version of the FTSOF hardware signal and it will be
cleared when read. The setting of this bit can cause a hardware interrupt to occur if the TSOF bit in the Interrupt
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