ZL50012/GDC ZARLINK [Zarlink Semiconductor Inc], ZL50012/GDC Datasheet - Page 28

• Manufacturer Part Number: ZL50012/GDC
• Description: Flexible 512-ch Digital Switch
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

2.7
By programming the input stream control registers (SICR0 to 15), users can divide one frame of input data into four
quadrant frames and can force the Least Significant Bit (LSB, bit 0 in Figure 7 on page 17), of every input channel
in these quadrants into "1" for the bit robbed signaling purpose. The four quadrant frames are defined as shown in
Table 9.
When a quadrant frame enable bit (STIN#QEN0, STIN#QEN1, STIN#QEN2 or STIN#QEN3) is set to high, the LSB
of every input channels in the quadrant is forced to "1". See Table 10 to Table 13 for details:
2.048 Mb/s
4.096 Mb/s
8.192 Mb/s
Data Rate
Quadrant frame programming
STIN#QEN0
STIN#QEN1
STIN#QEN2
STIN#QEN3
1
0
1
0
1
0
1
0
Quadrant 0
Ch 0 to 15
Ch 0 to 31
Ch 0 to 7
Table 9 - Definition of the Four Quadrant Frames
Table 10 - Quadrant Frame 0 LSB Replacement
Table 13 - Quadrant Frame 3 LSB Replacement
Table 11 - Quadrant Frame 1 LSB Replacement
Table 12 - Quadrant Frame 2 LSB Replacement
Replace LSB of every channel in Quadrant 0 with "1"
No bit replacement occurs in Quadrant 0
Replace LSB of every channel in Quadrant 1 with "1"
No bit replacement occurs in Quadrant 1
Replace LSB of every channel in Quadrant 2 with "1"
No bit replacement occurs in Quadrant 2
Replace LSB of every channel in Quadrant 3 with "1"
No bit replacement occurs in Quadrant 3
Zarlink Semiconductor Inc.
ZL50012
Quadrant 1
Ch 16 to 31
Ch 32 to 63
Ch 8 to 15
31
Action
Action
Action
Action
Quadrant 2
Ch 32 to 47
Ch 64 to 95
Ch 16 to 23
Ch 96 to 127
Quadrant 3
Ch 24 to 31
Ch 48 to 63
Data Sheet