dp83630sqx National Semiconductor Corporation, dp83630sqx Datasheet - Page 91

• Manufacturer Part Number: dp83630sqx
• Description: Precision Phyter - Ieee 1588 Precision Time Protocol Transceiver
• Manufacturer: National Semiconductor Corporation

11:8
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13
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14.6.2 PTP Event Configuration Register (PTP_EVNT), Page 5
This register provides basic configuration for IEEE 1588 Events. To write configuration to an Event Timestamp Unit, set the
EVNT_WR bit along with the EVNT_SEL and other control information. To read configuration from an Event Timestamp Unit, set
the EVNT_SEL encoding to the Event desired, and set the EVNT_WR bit to 0. The subsequent read of the PTP_EVNT register
will return the configuration information.
0
EVNT_SINGLE
EVNT_GPIO
EVNT_FALL
RESERVED
EVNT_RISE
RESERVED
EVNT_SEL
EVNT_WR
Bit Name
TABLE 64. PTP Event Configuration Register (PTP_EVNT), address 0x15
0000, RW
0000, RO
000, RW
Default
0, RW
0, RW
0, RW
0, RW
0, RO
Reserved: Writes ignored, Read as 0
Event Rise Detect Enable:
Enable Detection of Rising edge on Event input.
Event Fall Detect Enable:
Enable Detection of Falling edge on Event input.
Single Event Capture: Setting this bit to a 1 will enable single event capture
operation. The EVNT_RISE and EVNT_FALL enables will be cleared upon a valid
event timestamp capture.
Event GPIO Connection:
Setting this field to a non-zero value will connect the Event to the associated GPIO
pin. Valid settings for this field are 1 thru 12.
Reserved: Writes ignored, Read as 0
Event Select:
This field selects the Event Timestamp Unit for configuration read or write.
Event Configuration Write:
Setting this bit will generate a Configuration Write to the selected Event
Timestamp Unit.
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Description
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