MOTOROLA
參數(shù)資料
型號(hào)： XRT83L314IB
廠商： Exar Corporation
文件頁(yè)數(shù)： 47/84頁(yè)
文件大?。?/td> 0K
描述： IC LIU T1/E1/J1 14CH 304TBGA
標(biāo)準(zhǔn)包裝： 27
類型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 14/14
規(guī)程： T1，E1，J1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 304-LBGA
供應(yīng)商設(shè)備封裝： 304-TBGA（31x31）
包裝： 托盤
XRT83L314
14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
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 43. The timing specifications are shown in
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參數(shù)描述
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XRT83L314IB-L 功能描述:LIN 收發(fā)器 14 channel, LH/SH T1/E1 LIU RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8
XRT83L34 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
XRT83L34_05 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
XRT83L34ES 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
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