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Section 21 IEBus
TM
Controller
R01UH0134EJ0400 Rev. 4.00 Page 1135 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
21.3.22 IEBus Receive Data Buffer 001 to 128 (IERB001 to IERB128)
IERB001 to IERB128 are 128-byte (8 128) buffers to which data to be transmitted during slave
transmission is written.
The initial values in IERB001 to IERB128 are undefined.
76543210
--------
R* R* R* R* R* R* R* R*
[Legend]
n = 001 to 128
Bit:
Initial value:
R/W:
RBn
Bit Bit Name
Initial
Value R/W Description
7 to 0 RBn Undefined R* IEBus Receive Data Buffer
Data in RB001 to RB128 can be read when the RXBSY
bit in the IEBus receive status register (IERSR) is set to
1. Data read from RB001 to RB128 is the field data
during slave receive.
Receive data is written starting with RB001 for the start
1-byte data, followed by RB002 and RB003 and so on,
and RB128 stores the last data.
Note: * Reading these bits during slave reception (SRE in IEFLG is 1 and RXBSY in IERSR is
0) is prohibited. (Read value is undefined.)