參數(shù)資料
型號: UPD72042GT
廠商: NEC Corp.
英文描述: LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL
中文描述: LSI器件間設(shè)備BusTM(IEBusTM)協(xié)議控制
文件頁數(shù): 40/92頁
文件大小: 373K
代理商: UPD72042GT
μ
PD72042
40
Data Sheet S14870EJ1V0DS00
FLG
Address
Read/write
When reset : 00000010B
: 0001B (1H)
: Read
Flag register
FLG is a one-byte read register used to indicate statuses such as the communication state, command execution
state, and interrupt state.
[MARQ]
1 : A request for communication as the master unit is being made.
0 : No request for communication as the master unit is being made. Data can be written to the SAR1, SAR2, and
MCR registers.
The MARQ flag is set and reset as described below.
Set
: When the CEX flag of the FLG register is set to 0 after 1000 or 1001 is set in COMC of the CMR register
Reset : When master communication is terminated
[STRQ]
1 : A request for slave unit data transmission is being made.
0 : No request for slave unit data transmission is being made.
The STRQ flag is set and reset as described below.
Set
: When the CEX flag of the FLG register is set to 0 after 1011 or 1100 is set in COMC of the CMR register
Reset : When slave data transmission is terminated
[SLRE]
1 : Slave reception or broadcast is allowed.
0 : Slave reception and broadcast are not allowed.
The SLRE flag is set and reset as described below.
Set
: When REEN of the CTR register is set to 1
Reset : When slave reception or broadcast reception is terminated normally or suspended, or when CEX of
the FLG register is set to 0 after 1111 is set in COMC of the CMR register
When SLRE = 0, bit 1 of the slave status is set to 1 regardless of the state of RBF; communication frame reception
based on the AH, BH, EH, and FH control bits, received from the master station, is not performed.
b7
b6
MARQ
b5
STRQ
b4
b3
b0
RAW
FLG
b2
b1
SLRE
CEX
STM
IRQ
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