Datasheet

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
Rev. 6.00 Mar. 18, 2010 Page 482 of 982
REJ09B0054-0600
Figure 14.1 shows an IEB block diagram.
Rx
IEAR1
IEMA1
IELA1
IEMA2
IECMR
IETSR
IEIET
IETEF
IERSR
IEIER
IEREF
IECTR
IEAR2
Signal
polarity
select
circuit
Bit timing set/
detect circuit
IEBus
driver/receiver
Transmission blockReception block
Internal data bus
Transmit shift register
Receive shift register
Data link layer control block
Status/interrupt control block
IETXI
(TxRDY interrupt)
IETSI
(Tx status interrupt)
IERXI
(RxRDY interrupt)
IERSI
(Rx status interrupt)
Conflict
detect
circuit
Parity
generation
circuit
Parity
check
circuit
IESA1 IESA2
IEMCR
IETBFL
IETBR
IERCTL
IERBFL
IERBR
IELA2
Tx
Figure 14.1 Block Diagram of IEB