DS26504LNB2 Maxim Integrated Products, DS26504LNB2 Datasheet - Page 36
DS26504LNB2
Manufacturer Part Number
DS26504LNB2
Description
Network Controller & Processor ICs T1-E1-J1-64kHz Compo 4kHz Composite Clock
Manufacturer
Maxim Integrated Products
Datasheet
1.DS26504L.pdf
(129 pages)
Specifications of DS26504LNB2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number:
DS26504LNB2+
Manufacturer:
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Register Name:
Register Description:
Register Address:
Bit #
Name
Default
HW
Mode
For more information on all the bits in the Transmit PLL control register, refer to
Bits 0 and 1: Transmit Clock (TX CLOCK) Source Select (TCSS[0:1]). These bits control the output of the TX PLL
Clock Mux function. See
Bit 2: Transmit PLL_CLK Source Select (TPLLSS). Selects the reference signal for the TX PLL.
Bit 3 and 4: Transmit PLL Input Frequency Select (TPLLIFS[0:1]). These bits, along with TPLLIFS2 (TPCR2.0), are
used to indicate the reference frequency being input to the TX PLL.
Bit 5: PLL_OUT Select (PLLOS). This bit selects the source for the PLL_OUT pin. See
Bits 6 and 7: Transmit PLL Output Frequency Select (TPLLOFS[0:1]). These bits, along with TPLLOFS1 (TPCR2.1),
are used to select the TX PLL output frequency.
TPLLOFS2
TPLLIFS2
(TPCR2.0)
(TPCR2.1)
TCSS1
0
0
1
1
0
0
0
0
1
1
0
0
0
0
1
1
0 = Use the recovered network clock. This is the same clock available at the RCLK pin (output).
1 = Use the externally provided clock present at the TCLK pin.
0 = PLL_OUT is sourced directly from the TX PLL.
1 = PLL_OUT is the output of the TX PLL mux.
TPLLOFS1
TCSS0
TPLLIFS1
7
0
0
TPLLOFS1
0
1
0
1
0
0
1
1
0
0
0
0
1
1
0
0
Figure
TPLLOFS0
TPCR1
Transmit PLL Control Register 1
09h
The TCLK pin is the source of transmit clock.
The PLL_CLK is the source of transmit clock.
The scaled signal present at MCLK as the transmit clock.
The signal present at RCLK is the transmit clock.
6
0
0
3-3.
TPLLIFS0
TPLLOFS0
0
1
0
1
0
1
0
1
0
1
0
1
PLLOS
TRANSMIT CLOCK (TX CLOCK) SOURCE
5
0
0
TPLLIFS1
TX PLL OUTPUT
TX PLL INPUT
FREQUENCY
FREQUENCY
36 of 129
4
0
0
(See
1.544MHz
2.048MHz
19.44MHz
1.544MHz
2.048MHz
19.44MHz
6312kHz
6312kHz
64kHz
64kHz
8kHz
8kHz
Figure
TPLLIFS0
3-3)
3
0
0
Figure
TPLLSS
2
0
0
3-3.
Figure
TCSS1
TCSS1
PIN 31
3-3.
1
0
TCSS0
TCSS0
PIN 63
0
0
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