DS3105 Maxim Integrated Products, DS3105 Datasheet - Page 63

• Manufacturer Part Number: DS3105
• Description: Line Card Timing IC
• Manufacturer: Maxim Integrated Products

Register Name:
Register Description:
Register Address:
Name
Default
Bits 3 to 0: T4 DPL Force Selected Reference (T4FORCE[3:0]). This field provides a way to force a specified
input clock to be the selected reference for the T4 DPLL. Internally this is accomplished by forcing the clock to have
the highest priority (as specified in PTAB1:REF1). Since the T4 DPLL always operates in revertive mode, the
forced clock automatically becomes the selected reference (as specified in PTAB1:SELREF) as well.
When a reference is forced, the activity monitor for that input continues to operate and affect the relevant ISR,
VALSR
Register Name:
Register Description:
Register Address:
Name
Default
Bit 7: Reserved Bit 4 (RSV4). This bit is reserved for future use, it can be written to and read back.
Bit 6: Reserved Bit 3 (RSV3). This bit is reserved for future use, it can be written to and read back.
Bit 5: Reserved Bit 2 (RSV2). This bit is reserved for future use, it can be written to and read back.
Bit 4: Reserved Bit 1 (RSV1). This bit is reserved for future use, it can be written to and read back.
Bit 1: Input Clock 6 Signal Format (IC6SF). For backward compatibility this bit can be written to and read back,
but it does not affect the IC6POS/NEG inputs pins. See Section 7.4.1.
Confidential. Document Issued Under Non-Disclosure Agreement. Confidential. Document Issued Under Non-Disclosure Agreement.
and
0000 = Automatic source selection (normal operation)
0001 = {unused value, undefined}
0010 = {unused value, undefined}
0011 = Force to IC3
0100 = Force to IC4
0101 = Force to IC5
0110 = Force to IC6
0111 = {unused value, undefined}
1000 = {unused value, undefined}
1001 = Force to IC9
1010 to 1110 = {unused value, undefined}
1111 = Automatic source selection (normal operation)
MSR
Bit 7
RSV4
Bit 7
register bits. See section 7.6.3.
--
1
0
RSV3
Bit 6
Bit 6
--
0
0
MCR4
Master Configuration Register 4
35h
MCR5
Master Configuration Register 5
36h
Preliminary. Subject to Change Without Notice.
RSV2
Bit 5
Bit 5
--
0
0
63 of 110
RSV1
Bit 4
Bit 4
--
0
0
Bit 3
Bit 3
0
--
0
Bit 2
Bit 2
T4FORCE[3:0]
--
0
0
IC6SF
Bit 1
Bit 1
0
0
Bit 0
Bit 0
DS3105
--
0
0