ds3104-se Maxim Integrated Products, Inc., ds3104-se Datasheet - Page 98
ds3104-se
Manufacturer Part Number
ds3104-se
Description
Line Card Timing Ic With Synchronous Ethernet Support
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS3104-SE.pdf
(135 pages)
- Current page: 98 of 135
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Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 3 to 0: T4 APLL Frequency (T4FREQ[3:0]). When T0CR1:T4APT0 = 0, the T4 APLL DFS is connected to
the T4 DPLL, and this field configures the T4 APLL DFS frequency. The T4 APLL DFS frequency affects the
frequency of the T4 APLL which in turn affects the available output frequencies on the output clock pins (see the
OCR
________________________________________________________________________________________ DS3104-SE
registers). See Section 7.8.2.
T4FREQ[3:0]
1101–1111
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
Bit 7
—
0
T4 APLL DFS FREQUENCY
25.248MHz (4 x 6312kHz)
40.000MHz (4 x 10MHz)
26.000MHz (2 x 13MHz)
62.500MHz (GbE y 16)
37.056MHz (24 x DS1)
24.704MHz (16 x DS1)
30.720MHz (3 x 10.24)
Bit 6
APLL output disabled
24.576MHz (12 x E1)
32.768MHz (16 x E1)
68.736MHz (2 x E3)
—
0
44.736MHz (DS3)
{unused values}
T4CR1
T4 DPLL Configuration Register 1
64h
77.76MHz
Bit 5
—
0
Bit 4
—
0
T4 APLL FREQUENCY (4 x T4 APLL DFS)
100.992MHz (16 x 6312kHz)
311.04MHz (4 x 77.76MHz)
160.000MHz (16 x 10MHz)
Bit 3
104.000MHz (8 x 13MHz)
122.880MHz (12 x 10.24)
148.224MHz (96 x DS1)
250.000MHz (GbE y 4)
98.816MHz (64 x DS1)
178.944MHz (4 x DS3)
0
Disabled, output is low
131.072MHz (64 x E1)
98.304MHz (48 x E1)
274.944MHz (8 x E3)
{unused values}
Bit 2
1
T4FREQ[3:0]
Bit 1
0
Bit 0
1
98
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