参数资料
型号: PEF22554E
厂商: INFINEON TECHNOLOGIES AG
元件分类: 通信及网络
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件页数: 17/30页
文件大小: 914K
代理商: PEF22554E
QuadFALC
PEF 22554
Overview
Delta Sheet
17/30
2002-09-16
PHSN_E1, PHSN_T1: 1 to 15;
PHSX_E1, PHSX_T1: 0 to 5
3. Calculation of correction value for frequency mismatch correction:
The result of these equations will be in the range of -2048...+2047. Negative values are
represented in 2s-complement format (e.g., -2000
D
= 830
H
; +2000
D
= 7D0
H
).
To achieve optimal QuadFALC
performance values < -1023 and > +1023 must be
applied. Negative values are favored.
Note: All values are given in hexadecimal notation.
To support the necessary calculations, an easy-to-use PC tool is available for free (see
Page 29
for details).
Table 5
f
MCLK
[MHz]
1.544
2.048
8.192
10.000
12.352
16.384
Clock Mode Register Settings for E1 and T1/J1
GCM1
GCM2
GCM3
00
15
00
00
18
FB
00
18
FB
40
1B
3D
00
19
00
00
18
FB
GCM4
08
0B
0B
0A
08
0B
GCM5
00
00
00
00
01
01
GCM6
3F
2F
0B
07
0A
0B
GCM7
9C
DB
DB
C9
98
DB
GCM8
DF
DF
DF
DC
DA
DF
PHD_E1
12288
PHSN_E1
PHSX_E1
6
------------------------
+
4
------------------------------+
PLL_N
PLL_M
1
)
+
f
16.384 MHz
2
×
---------------------------------------
×
×
=
PHD_T1
12288
PHSN_T1
PHSX_T1
6
------------------------
+
4
------------------------------+
PLL_N
PLL_M
1
)
+
f
12.352 MHz
2
×
---------------------------------------
×
×
=
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