82V2042EPF8 IDT, Integrated Device Technology Inc, 82V2042EPF8 Datasheet - Page 47

• Manufacturer Part Number: 82V2042EPF8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2042EPF8

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

Table-29 TCF2: Transmitter Configuration Register 2
Table-30 TCF3: Transmitter Configuration Register 3
Table-31 TCF4: Transmitter Configuration Register 4
PROGRAMMING INFORMATION
IDT82V2042E
SAMP[3:0]
WDAT[6:0]
SCAL[5:0]
Symbol
Symbol
Symbol
DONE
UI[1:0]
RW
-
-
(R/W, Address = 06H, 26H)
(R/W, Address = 07H, 27H)
(R/W, Address = 08H, 28H)
7-6
5-0
5-4
3-0
6-0
Bit
Bit
Bit
7
6
7
0000000
Default
Default
Default
100001
0000
00
00
0
0
0
Reserved.
SCAL specifies a scaling factor to be applied to the amplitude of the user-programmable arbitrary pulses which is
to be transmitted if needed. The default value of SCAL[5:0] is ‘100001’. Refer to
trary
= 110110: Default value for T1 0~133 ft, T1 133~266 ft, T1 266~399 ft, T1 399~533 ft, T1 533~655 ft, J1 0~655 ft.
One step change of this value results in 2% scaling up/down against the pulse amplitude.
= 100001: Default value for E1 75 Ω and 120 Ω . One step change of this value results in 3% scaling up/down
against the pulse amplitude.
After ‘1’ is written to this bit, a read or write operation is implemented.
This bit selects read or write operation
= 0: Write to RAM
= 1: Read from RAM
These bits specify the unit interval address. There are totally 4 unit intervals.
= 00: UI address is 0 (The most left UI)
= 01: UI address is 1
= 10: UI address is 2
= 11: UI address is 3
These bits specify the sample address. Each UI has totally 16 samples.
= 0000: Sample address is 0 (The most left sample)
= 0001: Sample address is 1
= 0010: Sample address is 2
……
= 1110: Sample address is 14
= 1111: Sample address is 15
Reserved
In Indirect Write operation, the WDAT[6:0] will be loaded to the pulse template RAM, specifying the amplitude of
the Sample.
After an Indirect Read operation, the amplitude data of the Sample in the pulse template RAM will be output to the
WDAT[6:0].
Waveform.
DUAL CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
47
Description
Description
Description
3.3.3.2 User-Programmable Arbi-
December 12, 2005