SH7710 Datasheet, PDF (702/996 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 18 Ethernet Controller (EtherC)
18.3.24 Relay FIFO Size Select Register (TSU_FCM)
TSU_FCM selects the size of the TSU FIFO, used for relay operations between the MAC-0 and
MAC-1.
Initial
Bit
Bit Name Value
31 to 3 
All 0
2 to 0 FCM2 to All 0
FCM0
R/W Description
R
Reserved
These bits are always read as 0. The write value should
always be 0.
R/W TSU FIFO Size
H′0: Port 0 to 1: 3 kbytes Port 1 to 0: 3 kbytes
H′1: Port 0 to 1: 4 kbytes Port 1 to 0: 2 kbytes
H′2: Port 0 to 1 : 5 kbytes Port 1 to 0: 1 kbyte
H′3: Port 0 to 1: 6 kbytes Port 1 to 0: Not used
H′4: Port 0 to 1: Not used Port 1 to 0: 6 kbytes
H′5: Port 0 to 1: 1 kbyte Port 1 to 0: 5 kbytes
H′6: Port 0 to 1: 2 kbytes Port 1 to 0: 4 kbytes
H′7: Setting prohibited
Writing to this register is prohibited, after relay operations
have been enabled once (after the FWEN0 in
TSU_FWEN0 or the FWEN1 in TSU_FWEN1 is set to 1).
Rev. 2.00 Dec. 07, 2005 Page 660 of 950
REJ09B0079-0200