IDT82P20416 Integrated Device Technology, IDT82P20416 Datasheet - Page 70

• Manufacturer Part Number: IDT82P20416
• Description: 16-channel Short Haul T1/e1/j1 Line Interface Unit
• Manufacturer: Integrated Device Technology

SCAL - Amplitude Scaling Control Register
AWG0 - Arbitrary Waveform Generation Control Register 0
Address: 007H, 047H, 087H, 0C7H, 107H, 147H, 187H, 1C7H, (CH1~CH8)
Type: Read / Write
Default Value: 36H
Address: 008H, 048H, 088H, 0C8H, 108H, 148H, 188H, 1C8H, (CH1~CH8)
Type: Read / Write
Default Value: 00H
Programming Information
IDT82P20416
7 - 6
5 - 0
4 - 0
Bit
Bit
7
6
5
208H, 248H, 288H, 2C8H, 308H, 348H, 388H, (CH9~CH15)
7C8H (CH0)
207H, 247H, 287H, 2C7H, 307H, 347H, 387H, (CH9~CH15)
7C7H (CH0)
7
7
-
-
SAMP[4:0]
SCAL[5:0]
DONE
Name
Name
RW
-
-
DONE
6
6
-
Reserved.
This bit is valid only when the user-programmable arbitrary waveform is enabled (i.e., the PULS[3:0] bits (b3~0, PULS,...) are set
to ‘1XXX’). This bit determines whether to enable the data writing/reading from RAM.
0: Disable. (default)
1: Enable.
This bit is valid only when the user-programmable arbitrary waveform is enabled (i.e., the PULS[3:0] bits (b3~0, PULS,...) are set
to ‘1XXX’). This bit determines read/write direction.
0: Write data to RAM. (default)
1: Read data from RAM.
These bits are valid only when the user-programmable arbitrary waveform is enabled (i.e., the PULS[3:0] bits (b3~0, PULS,...)
are set to ‘1XXX’). These bits specify the RAM sample address.
00000: The RAM sample address is 0. (default)
00001: The RAM sample address is 1.
00010: The RAM sample address is 2.
......
10001: The RAM sample address is 17.
10010: The RAM sample address is 18.
10011 ~ 11111: The RAM sample address is 19.
Reserved.
These bits specify a scaling factor to be applied to the amplitude of the waveform to be transmitted.
In T1/J1 mode, the standard value is ‘110110’ for the waveform amplitude. If necessary, increasing or decreasing by ‘1’ from the
standard value will result in 2% scaling up or down against the waveform amplitude. The scale range is from +20% to -100%.
In E1 mode, the standard value is ‘100001’ for the waveform amplitude. If necessary, increasing or decreasing by ‘1’ from the
standard value will result in 3% scaling up or down against the waveform amplitude. The scale range is from +100% to -100%.
Note: The default value for SCAL[5:0] is ‘110110’ which is the T1/J1 standard value. Therefore, if E1 mode is used, ‘100001’
should be written to these bits to indicate the E1 standard value.
SCAL5
RW
5
5
SAMP4
SCAL4
4
4
70
16-CHANNEL SHORT HAUL T1/E1/J1 LINE INTERFACE UNIT
SAMP3
SCAL3
3
3
Description
Description
SCAL2
SAMP2
2
2
SCAL1
SAMP1
1
1
December 17, 2009
SCAL0
SAMP0
0
0