參數(shù)資料
型號: UPD72042B
廠商: NEC Corp.
英文描述: LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL
中文描述: LSI器件間設備BusTM(IEBusTM)協(xié)議控制
文件頁數(shù): 36/92頁
文件大?。?/td> 541K
代理商: UPD72042B
μ
PD72042A, 72042B
36
DATA SHEET S13990EJ2V0DS00
UAR1
UAR2
Address
: 0010B (2H) (UAR1)
0011B (3H) (UAR2)
: Write
Read/write
When reset : Undefined (with the
previous data held)
Local station unit address register
UAR1 and UAR2 are registers used to set a local station unit address (12 bits) and condition code.
Set UAR1 and UAR2 after reset cancellation.
b7
Local station address
(low-order 4 bits)
b4
b3
b0
Condition code
UAR1
b7
b0
Local station address (high-order 8 bits)
UAR2
[Local station address]
A local station address is used as a master address when the local station performs communication as the master
unit. A local station address is used as a slave address when the local station performs communication as a slave.
[Condition code]
Bit position
Condition code
Condition setting
b3, b2
00
Communication is performed in mode 0.
01
Communication is performed in mode 1.
10
Undefined
11
b0
0
The slave transmission section is disabled.
1
The slave transmission section is enabled.
Remark
Bit 1 of a condition code is not used. (Set the bit to either 0 or 1.)
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