SH7261 Datasheet, PDF (932/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 20 IEBus^TM Controller (IEB) [R5S72612] [R5S72613]
Initial
Bit
Bit Name Value R/W Description
3 to 0 CTL*¹
0000 R/W Control bits
Set the control bits in the control field for master
transmission.
0000: Reads slave status
0001: Undefined*³
0010: Undefined*³
0011: Reads data and locks*²
0100: Reads locked address (lower 8 bits)
0101: Reads locked address (upper 4 bits)
0110: Reads slave status and unlocks*²
0111: Reads data
1000: Undefined*³
1001: Undefined*³
1010: Writes command and locks*²
1011: Writes data and locks*²
1100: Undefined*³
1101: Undefined*³
1110: Writes command
1111: Writes data
Notes: 1. CTL3 decides the data transfer direction of the message length bits in the message
length field and data bits in the data field:
CTL3 = 1: Transfer is from master unit to slave unit
CTL3 = 0: Transfer is from slave unit to master unit
2. Control bits to lock and unlock
3. Setting prohibited.
Rev. 2.00 Sep. 07, 2007 Page 900 of 1312
REJ09B0320-0200