参数资料
| 型号： | XRT83SL314IB |
| 厂商： | Exar Corporation |
| 文件页数： | 46/83页 |
| 文件大小： | 0K |
| 描述： | IC LIU SH T1/E1/J1 14CH 304TBGA |
| 标准包装： | 27 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 14/14 |
| 规程： | T1，E1，J1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 304-LBGA |
| 供应商设备封装： | 304-TBGA（31x31） |
| 包装： | 托盘 |
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XRT83SL314
xr
REV. 1.0.1
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
47
5.3
Motorola Mode Programmed I/O Access (Synchronous)
If the LIU is interfaced to a Motorola type P, it should be configured to operate in the Motorola mode. Motorola
type programmed I/O Read and Write operations are described below.
Motorola Mode Read Cycle
Whenever a Motorola type P wishes to read the contents of a register, it should do the following.
1. Place the address of the target register on the address bus input pins ADDR[10:0].
2. While the P is placing this address value on the address bus, the address decoding circuitry should
assert the CS pin of the LIU, by toggling it "Low". This action enables further communication between the
P and the LIU microprocessor interface block.
3. The P should then toggle the TS pin "Low". This step causes the LIU to latch the contents of the address
bus into its internal circuitry. At this point, the address of the register has now been selected.
4. Next, the P should indicate that this current bus cycle is a Read operation by pulling the R/W input pin
"High".
5. Toggle the WE input pin "Low". This action enables the bi-directional data bus output drivers of the LIU.
6. After the P toggles the WE signal "Low", the LIU will toggle the TA output pin "Low". The LIU does this in
order to inform the P that the data is available to be read by the P, and that it is ready for the next com-
mand.
7. After the P detects the TA signal and has read the data, it can terminate the Read Cycle by toggling the
WE input pin "High".
Motorola Mode Write Cycle
Whenever a motorola type P wishes to write a byte or word of data into a register within the LIU, it should do
the following.
1. Place the address of the target register on the address bus input pins ADDR[10:0].
2. While the P is placing this address value on the address bus, the address decoding circuitry should
assert the CS pin of the LIU, by toggling it "Low". This action enables further communication between the
P and the LIU microprocessor interface block.
3. The P should then toggle the TS pin "Low". This step causes the LIU to latch the contents of the address
bus into its internal circuitry. At this point, the address of the register has now been selected.
4. Next, the P should indicate that this current bus cycle is a Write operation by pulling the R/W input pin
"Low".
5. Toggle the WE input pin "Low". This action enables the bi-directional data bus output drivers of the LIU.
6. After the P toggles the WE signal "Low", the LIU will toggle the TA output pin "Low". The LIU does this in
order to inform the P that the data has been written into the internal register location, and that it is ready
for the next command.
7. After the P detects the TA signal and has read the data, it can terminate the Read Cycle by toggling the
WE input pin "High".
The Motorola Read and Write timing diagram is shown in Figure 40. The timing specifications are shown in
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| XRT83SL314IB-F | 功能描述:LIN 收发器 RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
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| XRT83SL34IV | 功能描述:时钟合成器/抖动清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
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