ZL50050GAC ZARLINK [Zarlink Semiconductor Inc], ZL50050GAC Datasheet - Page 67
ZL50050GAC
Manufacturer Part Number
ZL50050GAC
Description
8 K-Channel Digital Switch with High Jitter Tolerance, Per Stream Rate Conversion (2, 4, 8, 16, or 32 Mbps), and 32 Inputs and 32 Outputs
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.ZL50050GAC.pdf
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14.9
Addresses 00A3
Sixteen Backplane Output Advancement Registers (BOAR0 to BOAR15) allow users to program the output
advancement for output data streams BSTo0 to BSTo15.
For 2 Mbps, 4 Mbps, 8 Mbps and 16 Mbps stream operation, the possible adjustment is -2 (15 ns), -4 (31 ns) or -6
(46 ns) cycles of the internal system clock (131.072 MHz).
For 32 Mbps stream operation, the possible adjustment is -1 (7.6 ns), -2 (15 ns) or -3 (23 ns) cycles of the internal
system clock (131.072 MHz).
The BOAR0 to BOAR15 registers are configured as follows:
14.9.1
The binary value of these two bits indicates the amount of offset that a particular stream output can be advanced
with respect to the output frame boundary. When the advancement is 0, the serial output stream has the normal
alignment with the generated frame pulse FP8o.
(where n = 0 to 15 for Backplane
Non-32 Mbps Mode, n = 0 to 7
for Backplane 32 Mbps Mode)
Backplane Output Advancement For
2 Mbps, 4 Mbps, 8 Mbps & 16 Mbps
2 Mbps, 4 Mbps, 8 Mbps & 16 Mbps
Local Output Advancement For
Backplane Output Advancement Registers (BOAR0 - BOAR15)
Backplane Output Advancement Bits 1-0 (BOA1-BOA0)
BOARn Bit
Clock Rate 131.072 MHz
Clock Rate 131.072 MHz
15:2
Table 31 - Local Output Advancement (LOAR) Programming Table (continued)
1:0
-4 cycles (~31 ns)
-6 cycles (~46 ns)
-2 cycles (~15 ns)
-4 cycles (~31 ns)
-6 cycles (~46ns)
H
Table 33 - Backplane Output Advancement (BOAR) Programming Table
to 00B2
0 (Default)
Table 32 - Backplane Output Advancement Register (BOAR) Bits
H
Reserved
BOA[1:0]
Name
Zarlink Semiconductor Inc.
ZL50050
Reset
Value
0
0
Advancement For 32 Mbps
Advancement For 32 Mbps
67
Clock Rate 131.072 MHz
Clock Rate 131.072 MHz
Backplane Output
-2 cycles (~15 ns)
-3 cycles (~23 ns)
-2 cycles (~15 ns)
-3 cycles (~23 ns)
-1 cycle (~7.6 ns)
Reserved
Must be set to 0 for normal operation
Backplane Output Advancement Value
Local Output
0 (Default)
Description
Advancement Bits
Advancement Bits
BOA1
LOA1
Corresponding
Corresponding
1
1
0
0
1
1
Data Sheet
BOA0
LOA0
0
1
0
1
0
1
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