82P2288BB IDT, Integrated Device Technology Inc, 82P2288BB Datasheet - Page 102

• Manufacturer Part Number: 82P2288BB
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82P2288BB

• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Not Compliant

or down at the percentage ratio against the standard pulse amplitude if
necessary. For different pulse shapes, the value of the SCAL[5:0] bits
and the scaling percentage ratio are different. The values are listed in
Table 62 to Table 73.
programmed based on the selected waveform template:
bits;
stored in the RAM, addressed by the selected UI and the corresponding
sample address;
from RAM;
read from the internal RAM).
of the waveform based on the selected standard pulse amplitude.
templates and LBOs in details for reference. For preset pulse templates
and LBOs, scaling up/down against the pulse amplitude is not
supported.
Functional Description
IDT82P2288
Do the followings step by step, the desired waveform can be
1. Select the UI by the UI[1:0] bits;
2. Specify the sample address in the selected UI by the SAMP[3:0]
3. Write sample data to the WDAT[6:0] bits. It contains the data to be
4. Set the RW bit to ‘0’ to write data to RAM, or to ‘1’ to read data
5. Set the DONE bit to implement the read or write operation;
(Repeat the above steps until all the sample data are written to or
6. Write the scaling data to the SCAL[5:0] bits to scale the amplitude
Table 62 to Table 73 give all the sample data based on preset pulse
1. Table 62 - Transmit Waveform Value For E1 75 Ω
2. Table 63 - Transmit Waveform Value For E1 120 Ω
3. Table 64 - Transmit Waveform Value For T1 0~133 ft
4. Table 65 - Transmit Waveform Value For T1 133~266 ft
5. Table 66 - Transmit Waveform Value For T1 266~399 ft
6. Table 67 - Transmit Waveform Value For T1 399~533 ft
7. Table 68 - Transmit Waveform Value For T1 533~655 ft
8. Table 69 - Transmit Waveform Value For J1 0~655 ft
102
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
Table 62: Transmit Waveform Value For E1 75 Ω
The standard value of the SCAL[5:0] bits is ‘100001’. One step change of this value
results in 3% scaling up/down against the pulse amplitude.
Sample 10
Sample 11
Sample 12
Sample 13
Sample 14
Sample 15
Sample 16
Sample 1
Sample 2
Sample 3
Sample 4
Sample 5
Sample 6
Sample 7
Sample 8
Sample 9
9. Table 70 - Transmit Waveform Value For DS1 0 dB LBO
10. Table 71 - Transmit Waveform Value For DS1 -7.5 dB LBO
11. Table 72 - Transmit Waveform Value For DS1 -15.0 dB LBO
12. Table 73 - Transmit Waveform Value For DS1 -22.5 dB LBO
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0001100
0110000
0110000
0110000
0110000
0110000
0110000
0110000
0110000
UI 1
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
UI 2
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
UI 3
JANUARY 10, 2011
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
0000000
UI 4