HSP50415 Datasheet, PDF (20/29 Pages) Intersil Corporation – Wideband Programmable Modulator (WPM)

BIT NO.
31:16
15
14
13
12
11:10
9:6
5
4
3
2
1
0
HSP50415
TABLE 15. DEVICE CONFIGURATION CONTROL
ADDRESS = 01_H
DESCRIPTION
Symbol NCO Counter MaxCount<15:0>
Symbol NCO Counter Mode Enable
Fast DAC delay
Bypass Final Interpolation Filter
2-bit Filter Mode. Input data at 2x rate with # taps used.
Shaping Filter Interpolation
00_B = 4x
01_B = 8x
10_B = 16x
11_B = reserved
Data Bit Width NumBits/2^B12-1
If Bit 12 = 0,
0000_B = 1 bit
0001_B = 2 bits…
1110_B = 15 bits
1111_B = 16 bits
If Bit 12 = 1,
0000_B = 2 bits
0001_B = 4 bits…
1110_B = 30 bits
1111_B = 32 bits
X/Sin(X) Filter Bypass.
0 = Enable 1 = Bypass
Half Band Filter Enable
0 = Bypass 1 = Enable
Shaping Filter Bypass
0 = Enable 1 = Bypass
Decimate by 2 at output of Shaping Filter
0 = Disable 1 = Enable
Constellation Map Bypass
0 = Enable 1 = Bypass
FIFO Bypass
0 = Enable 1 = Bypass
RESET STATE
0000_H
0_B
1_B
1_B
0_B
00_B
0000_B
1
0
1
0
1
1
4-20