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)： 33/92頁
文件大小： 373K
代理商： UPD72042GT
μ
PD72042
33
Data Sheet S14870EJ1V0DS00
Notes 2.
When the MSB of the control bits set in MCR is 1 (for master transmission), set the number of bytes
of transmission data, and at least one byte of transmission data in TBF before command setting.
3.
When the MSB of the control bits set in MCR is 1 (for master transmission), set at least one byte of
transmission data before command setting. This operation is not required if all transmission data has
already been set in TBF.
4.
Set the number of bytes of transmission data, and at least one byte of transmission data in TBF before
command setting.
5.
Set at least one byte of transmission data in TBF before command setting. This operation is not required
if all transmission data has already been set in TBF.
(2) When bit 7 (MSB) of CMR is 1
An optional function is set.
[MFC]
: Selection of one frame/multiple frames
1 : Data for multiple frames is stored in RBF.
0 : Data for only one frame is stored in RBF.
[DERC]
: Broadcast reception selection
1 : The issue of return code 1100 (broadcast reception error) for SLRC of the RCR register is enabled.
0 : The issue of return code 1100 (broadcast reception error) for SLRC of the RCR register is disabled.
[IRS]
: Interrupt generation condition selection
0 : An interrupt is requested when the data of the RCR register changes.
1 : An interrupt is requested when the data of the RCR register changes to other than the following:
MARC = 0000B (start of master transmission)
MARC = 0100B (start of master reception)
SLRC = 0000B (start of slave data transmission)
SLRC = 0100B (start of slave reception)
SLRC = 1000B (start of broadcast reception)
Caution Set an optional function in initialization processing after reset cancellation for the
μ
PD72042.
Until an optional function has been set, the
μ
PD72042 will not accept IEBus communication.
b7
1
b6
0
b5
0
b4
b3
b0
IRS
CMR
b2
b1
0
0
MFC
DERC
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