Section 20 Ethernet Controller (EtherC)
Rev. 1.00 Mar. 12, 2008 Page 774 of 1178
REJ09B0403-0100
20.3.19 IPG Register (IPGR)
IPGR sets the IPG (Inter Packet Gap). This register must not be changed while the transmitting
and receiving functions of the EtherC mode register (ECMR) are enabled. (For details, refer to
section 20.4.6, Operation by IPG Setting.)
Bit Bit
Name
Initial
Value
R/W Description
31 to 5
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
4 to 0
IPG4 to IPG0 H'13
R/W
Inter Packet Gap
Sets the IPG value every 4-bit time.
H'00: 20-bit time
H'01: 24-bit time
:
:
H'13: 96-bit time (Initial value)
:
:
H'1F: 144-bit time
20.3.20 Automatic PAUSE Frame Set Register (APR)
APR sets the TIME parameter value of the automatic PAUSE frame. When transmitting the
automatic PAUSE frame, the value set in this register is used as the TIME parameter of the
PAUSE frame.
Bit Bit
Name
Initial
Value
R/W Description
31 to 16
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
15 to 0 AP15 to AP0 All 0
R/W
Automatic PAUSE
Sets the TIME parameter value of the automatic
PAUSE frame. At this time, 1 bit means 512-bit time.
Содержание H8S Family
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Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
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