SH7763 Datasheet, PDF (1044/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 23 Gigabit Ethernet Controller (GETHER)
Interrupt Interrupt Source
Interrupt with E-MAC-1 Too-Long Frame Receive
transfer
between port _{E-MAC-1 Too-Short Frame Receive}
0 and port 1
(GEINT2)
E-MAC-1 Frame Receive Error
E-MAC-1 CRC Error Frame Receive
Register and Bit
Interrupt Generated
Timing
TSU_FWSR.RINT41 When the interrupt
source is detected
TSU_FWSR.RINT31 When the interrupt
source is detected
TSU_FWSR.RINT21 When the interrupt
source is detected
TSU_FWSR.RINT11 When the interrupt
source is detected
23.4.9 Activation Procedure
The GETHER should be activated by the following procedure:
(1) Reset
1. Perform a power-on reset.
2. Start the E-DMAC transmitter and receiver (activation of descriptor engine).
• Set ENT to 1 and ENR to 1 in EDSR.
3. Perform a software reset.
• Set SWRR to 1 and SWRT to 1 in EDMR simultaneously.
4. Initialize the descriptor entry table.
5. Confirm cancellation of the software reset.
• Check that the SWRR and SWRT bits in EDMR are cleared to 0.
(2) Registration of Descriptor Ring
The address of a descriptor ring configured in memory is registered in the descriptor entry table.
1. Transmit Descriptor Setting
• Set TDLAR.
• Set TDFAR.
• Set TDFXR.
• Set TDFFR. When the descriptor indicated by TDFXR is the last descriptor in the descriptor
list, set H'00000001.
Rev. 1.00 Oct. 01, 2007 Page 978 of 1956
REJ09B0256-0100