Internal Registers Of Iebus Controller; Internal Register List - NEC V850/SB1 User Manual

19.3 Internal Registers of IEBus Controller

19.3.1 Internal register list

Address Function Register Name
FFFFF3E0H IEBus control register
FFFFF3E2H IEBus unit address register
FFFFF3E4H IEBus slave address register
FFFFF3E6H IEBus partner address register
FFFFF3E8H IEBus control data register
FFFFF3EAH IEBus telegraph length register
FFFFF3ECH IEBus data register
FFFFF3EEH IEBus unit status register
FFFFF3F0H IEBus interrupt status register
FFFFF3F2H IEBus slave status register
FFFFF3F4H IEBus communication success
counter
FFFFF3F6H IEBus transmit counter
FFFFF3F8H IEBus clock selection register
FFFFF3DEH
IEBus high-speed clock selection
register
Note The IEHCLK register is available only in the V850/SB2.
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CHAPTER 19 IEBus CONTROLLER (V850/SB2)
Table 19-7. Internal Registers of IEBus Controller
Symbol
BCR
UAR
SAR
PAR
CDR
DLR
DR
USR
ISR
SSR
SCR
CCR
IECLK
Note
IEHCLK
User's Manual U13850EJ6V0UD
R/W Bit Units for Manipulation
1 Bit 8 Bits
√ √
R/W
– –
– –
R – –
√
R/W –
√
–
√
–
√ √
R
√ √
R/W
√ √
R
√
–
√
–
√
R/W –
√
R/W –
After Reset
16 Bits
– 00H
√
0000H
√
√
– 01H
–
– 00H
–
–
– 41H
– 01H
– 20H
– 00H
– 00H