Ethernet (ETH): media access control (MAC) with DMA controller RM0008
1024/1096 Doc ID 13902 Rev 12
MMC received good unicast frames counter register (ETH_MMCRGUFCR)
Address offset: 0x01C4
Reset value: 0x0000 0000
This register contains the number of good unicast frames received.
29.8.3 IEEE 1588 time stamp registers
This section describes the registers required to support precision network clock
synchronization functions under the IEEE 1588 standard.
Ethernet PTP time stamp control register (ETH_PTPTSCR)
Address offset: 0x0700
Reset value: 0x0000 0000
This register controls the time stamp generation and update logic.
Ethernet PTP subsecond increment register (ETH_PTPSSIR)
313029282726252423222120191817161514131211109876543210
RGUFC
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
Bits 31:0 RGUFC: Received good unicast frames counter
313029282726252423222120191817161514131211109876543210
Reserved
TTSARU
TSITE
TSSTU
TSSTI
TSFCU
TSE
rw rw rw rw rw rw
Bits 31:5 Reserved
Bit 5 TSARU: Time stamp addend register update
When this bit is set, the Time stamp addend register’s contents are updated to the PTP block
for fine correction. This bit is cleared when the update is completed. This register bit must be
read as zero before you can set it.
Bit 4 TSITE: Time stamp interrupt trigger enable
When this bit is set, a time stamp interrupt is generated when the system time becomes greater
than the value written in Target Time register. When the Time Stamp Trigger interrupt is
generated, this bit is cleared.
Bit 3 TSSTU: Time stamp system time update
When this bit is set, the system time is updated (added to or subtracted from) with the value
specified in the Time stamp high update and Time stamp low update registers. Both the
TSSTU and TSSTI bits must be read as zero before you can set this bit. Once the update is
completed in hardware, this bit is cleared.
Bit 2 TSSTI: Time stamp system time initialize
When this bit is set, the system time is initialized (overwritten) with the value specified in the
Time stamp high update and Time stamp low update registers. This bit must be read as zero
before you can set it. When initialization is complete, this bit is cleared.
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