ds3104 Maxim Integrated Products, Inc., ds3104 Datasheet - Page 13

• Manufacturer Part Number: ds3104
• Description: Ds3104 Line Card Timing Ic With Synchronous Ethernet Support
• Manufacturer: Maxim Integrated Products, Inc.

6.
Table 6-1. Input Clock Pin Descriptions
Rev: 012108
________________________________________________________________________________________ DS3104-SE
PIN NAME
REFCLK
IC1POS,
IC2POS,
IC5POS,
IC6POS,
IC1NEG
IC2NEG
IC5NEG
IC6NEG
SYNC1
SYNC2
SYNC3
IC3
IC4
IC8
IC9
Pin Descriptions
(1)
TYPE
I
I
I
I
DIFF
DIFF
I
I
DIFF
DIFF
I
I
I
I
I
PD
PD
PD
PD
PD
PD
PU
I
(2)
Reference Clock. Connect to a 12.800MHz, high-accuracy, high-stability, low-noise local
oscillator (XO or TCXO). See Section 7.3.
Input Clock 1. LVDS/LVPECL or CMOS/TTL. Programmable frequency (default 8kHz).
LVDS/LVPECL: See
CMOS/TTL: Bias IC1NEG to 1.4V and connect the single-ended signal to IC1POS.
Input Clock 2. LVDS/LVPECL or CMOS/TTL. Programmable frequency (default 8kHz).
LVDS/LVPECL: See
CMOS/TTL: Bias IC2NEG to 1.4V and connect the single-ended signal to IC2POS.
This input can be associated with the SYNC3 pin.
Input Clock 3. CMOS/TTL. Programmable frequency (default 8kHz). This input can be
associated with the SYNC1 pin.
Input Clock 4. CMOS/TTL. Programmable frequency (default 8kHz). This input can be
associated with the SYNC2 pin.
Input Clock 5. LVDS/LVPECL or CMOS/TTL. Programmable frequency (default 19.44MHz).
LVDS/LVPECL: See
CMOS/TTL: Bias IC5NEG to 1.4V and connect the single-ended signal to IC5POS.
This input can be associated with the SYNC1 pin.
Input Clock 6. LVDS/LVPECL or CMOS/TTL. Programmable frequency (default 19.44MHz).
LVDS/LVPECL: See
CMOS/TTL: Bias IC6NEG to 1.4V and connect the single-ended signal to IC6POS.
This input can be associated with the SYNC2 pin.
Input Clock 8. CMOS/TTL. Programmable input reference (default 19.44MHz).
Input Clock 9. CMOS/TTL. Programmable frequency (default 19.44MHz). This input can be
associated with the SYNC3 pin.
Frame-Sync 1 Input. 2kHz, 4kHz, or 8kHz.
FSCR3:SOURCE ! = 11XX. This pin is the external frame-sync input associated with any input
pin using the FSCR3:SOURCE field.
FSCR3:SOURCE = 11XX. This pin is the external frame-sync signal associated with IC3 or
IC5, depending on which one is currently selected and the setting of FSCR1.SYNCSRC[1:0].
Frame-Sync 2 Input. 2kHz, 4kHz, or 8kHz.
FSCR3:SOURCE ! = 11XX. This pin is not used for the external frame-sync signal.
FSCR3:SOURCE = 11XX. This pin is the external frame-sync signal associated with IC4 or
IC6, depending on which one is currently selected and the setting of FSCR1.SYNCSRC[1:0].
Frame-Sync 3 Input. 2kHz, 4kHz, or 8kHz.
FSCR3:SOURCE ! = 11XX. This pin is not used for the external frame-sync signal.
FSCR3:SOURCE = 11XX. This pin is the external frame-sync signal associated with IC9 or
IC2, depending on which one is currently selected and the setting of FSCR1.SYNCSRC[1:0].
Table
Table
Table
Table
10-4,
10-4,
10-4,
10-4,
Figure
Figure
Figure
Figure
PIN DESCRIPTION
10-1, and
10-1, and
10-1, and
10-1, and
Figure
Figure
Figure
Figure
10-2.
10-2.
10-2.
10-2.
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