SH7764 Datasheet, PDF (762/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 19 Ethernet Controller (EtherC)
Initial
Bit
Bit Name Value R/W Description
19
ZPF
0
R/W PAUSE Frame Usage with TIME = 0 Enable
0: Control of a PAUSE frame whose TIME parameter
value is 0 is disabled.
The next frame is not transmitted until the time
specified by the Timer value has elapsed. If a
PAUSE frame whose time specified by the Timer
value is 0 is received, that PAUSE frame is
discarded.
1: Control of a PAUSE frame whose TIME parameter
value is 0 is enabled.
When the data size in the receive FIFO becomes
smaller than the FCFTR setting before the time
specified by the Timer value elapses, an automatic
PAUSE frame with a Timer value of 0 is transmitted.
On receiving a PAUSE frame with a Timer value of 0,
the transmission wait state is canceled.
18
PFR
0
R/W PAUSE Frame Receive Mode
0: PAUSE frame is not transferred to E-DMAC
1: PAUSE frame is transferred to E-DMAC
17
RXF
0
R/W Operating Mode for Receiving Port Flow Control
0: PAUSE frame detection is disabled
1: Flow control for the receiving port is enabled
16
TXF
0
R/W Operating Mode for Transmitting Port Flow Control
0: Flow control for the transmitting port is disabled
(Automatic PAUSE frame is not transmitted)
1: Flow control for the transmitting port is enabled
(Automatic PAUSE frame is transmitted as required)
15 to 13 
All 0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
12
PRCEF 0
R/W CRC Error Frame Reception Enable
0: A frame with a CRC error is received as a frame with
an error
1: A frame with a CRC error is received as a frame
without an error
Rev. 1.00 Nov. 22, 2007 Page 706 of 1692
REJ09B0360-0100