SH7751 Datasheet, PDF (1014/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. PCI Controller (PCIC)
Always write to this register prior to performing memory read/write operations by PIO transfer.
Bits 31 to 24—Memory Space Base Address (MBR31 to 24): Sets the base address for the PCI
memory space in PIO transfers. (Initial value is undefined.)
Bits 23 to 1—Reserved: These bits always return 0 when read. Always write 0 to these bits when
writing.
Bit 0—Lock Transfer (LOCK): Specifies the locking of the memory space during PIO transfer.
Bit 0: LOCK
0
1
Description
Not locked
Locked
(Initial value)
Rev.4.00 Oct. 10, 2008 Page 916 of 1122
REJ09B0370-0400