LAN9250 datasheet(316/421 Pages) MICROCHIP

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LAN9250

DS00001913A-page 316

 2015 Microchip Technology Inc.

14.8

1588 Registers

This section details the directly addressable PTP timestamp related registers.

For GPIO related registers, the wildcard “x” should be replaced with “0” through “7”.

Similarly, for Clock Compare events, the wildcard “x” should be replaced with “A” or “B”.

Port and GPIO registers share a common address space. Port vs. GPIO registers are selected by using the Bank Select

(BANK_SEL[2:0] in the 1588 Bank Port GPIO Select Register (1588_BANK_PORT_GPIO_SEL). The GPIO accessed

(“x”) is set by the GPIO Select (GPIO_SEL[2:0]) field.

Note:

The IEEE 1588 Unit supports 3 GPIO signals.

For an overview of the entire directly addressable register map, refer to Section 5.0, "Register Map," on page 29.

TABLE 14-1:

1588 CONTROL AND STATUS REGISTERS

BANK

SELECT

ADDRESS

OFFSET

100h

1588 Command and Control Register (1588_CMD_CTL)

104h

1588 General Configuration Register (1588_GENERAL_CONFIG)

108h

1588 Interrupt Status Register (1588_INT_STS)

10Ch

1588 Interrupt Enable Register (1588_INT_EN)

110h

1588 Clock Seconds Register (1588_CLOCK_SEC)

114h

1588 Clock NanoSeconds Register (1588_CLOCK_NS)

118h

1588 Clock Sub-NanoSeconds Register (1588_CLOCK_SUBNS)

11Ch

1588 Clock Rate Adjustment Register (1588_CLOCK_RATE_ADJ)

120h

1588 Clock Temporary Rate Adjustment Register (1588_CLOCK_TEMP_RATE_-

ADJ)

124h

1588 Clock Temporary Rate Duration Register (1588_CLOCK_TEMP_RATE_DU-

RATION)

128h

1588 Clock Step Adjustment Register (1588_CLOCK_STEP_ADJ)

12Ch

1588 Clock Target x Seconds Register (1588_CLOCK_TARGET_SEC_x) x=A

130h

1588 Clock Target x NanoSeconds Register (1588_CLOCK_TARGET_NS_x) x=A

134h

1588 Clock Target x Reload / Add Seconds Register (1588_CLOCK_TARGET_RE-

LOAD_SEC_x) x=A

138h

1588 Clock Target x Reload / Add NanoSeconds Register (1588_CLOCK_TAR-

GET_RELOAD_NS_x) x=A

13Ch

1588 Clock Target x Seconds Register (1588_CLOCK_TARGET_SEC_x) x=B

140h

1588 Clock Target x NanoSeconds Register (1588_CLOCK_TARGET_NS_x) x=B

144h

1588 Clock Target x Reload / Add Seconds Register (1588_CLOCK_TARGET_RE-

LOAD_SEC_x) x=B

148h

1588 Clock Target x Reload / Add NanoSeconds Register (1588_CLOCK_TAR-

GET_RELOAD_NS_x) x=B

14Ch

1588 User MAC Address High-WORD Register (1588_USER_MAC_HI)

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