ZL50021GAC ZARLINK [Zarlink Semiconductor Inc], ZL50021GAC Datasheet - Page 83

• Manufacturer Part Number: ZL50021GAC
• Description: Enhanced 4 K Digital Switch with Stratum 3 DPLL
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

Note 1:
Note 2:
Note 1:
Note 2:
15 - 0
15 - 0
External Read/Write Address: 0055
Reset Value: 3B9A
MC[n]
Bit
Bit
MFL
External Read/Write Addresses: 0056
Reset Value: 387F
15
15
31
15
The default value represents far lower limit for all reference frequencies, which is -11.287ppm (Stratum 3 compliant
value), regardless of the reference frequency.
The name ’lower’ is based on frequency.
The default value represents lower bits of multi-period count for 8 kHz input frequency, calculated to have 10 seconds
observation time.
When the MRLE bit of DPLLCR register is low, these registers are ignored. Depending on reference frequency (detected or
programmed through the Reference Frequency Register), the following values are used instead:
’h387F - if reference frequency is 8 kHz
’h987F - if reference frequency is 1.544 MHz
’h7FFF - if reference frequency is 2.048 MHz
’hFFFF - if reference frequency is 4.096 MHz, 8.192 MHz or16.384 MHz
’h4EFF - if reference frequency is 19.44 MHz
MC[n]
MFL
MC[n]15 - 0
14
30
14
14
MFL31 - 16
(n = 0 - 3)
Table 50 - Multi-period Count Register - Lower 16 Bits (RnMPCRL) Bits, (n = 0 - 3)
Name
Name
Table 49 - Multi-period Far Lower Limit Register - Upper 16 Bits (MPFLLRU)
MC[n]
MFL
13
H
29
13
13
H
(Note 1)
(see Note 1)
MFL
MC[n]
12
28
12
12
Reference n Multi-period Count Bits: Total binary value of these bits and the
RnMPCRU register bits defines the number of reference clock periods to be measured
for the multi-period frequency check for the REFn input monitoring, minus 1.
Multiple-Period Far Lower Limit Bits: Total binary value of these bits and the
MPFLLRL register bits defines the far lower limit for the multiple period count of any
reference input, minus 1. The unit of the binary value is measured in 100 MHz clock
periods.
MFL
H
MC[n]
11
27
11
11
H
, 005A
MFL
MC[n]
10
26
10
10
H
, 005E
MFL
MC[n]
25
9
H
Zarlink Semiconductor Inc.
9
9
, 0062
ZL50021
MFL
24
MC[n]
8
H
8
8
83
MFL
23
MC[n]
7
7
7
Description
Description
MFL
22
6
MC[n]
6
6
MFL
21
5
MC[n]
5
5
MFL
20
4
MC[n]
4
4
MFL
19
3
MC[n]
3
3
MFL
18
2
MC[n]
2
2
MFL
17
1
Data Sheet
MC[n]
1
1
MFL
16
0
MC[n]
0
0