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參數資料
| 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器件間設備BusTM（IEBusTM）協議控制 |
| 文件頁數： | 50/92頁 |
| 文件大?。?/td> | 373K |
| 代理商： | UPD72042GT |
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μ
PD72042
50
Data Sheet S14870EJ1V0DS00
[SLRC]
SLRC indicates the communication status for slave data transmission, slave reception, or broadcast reception.
(a) Slave data transmission
Slave data transmission is performed when the microcomputer makes the setting described below.
Slave data transmission setting
In COMC of the CMR register, a command (1011 or 1100) for requesting slave data transmission is set
from the microcomputer.
Table 4-6 SLRC Return Codes in Slave Data Transmission
SLRC
Description
0000
1. Meaning
: Slave data transmission has been started.
2. Occurrence condition
: This return code is issued when the control bits (0011 or 0111) requesting data
transmission are received from the master unit.
0001
1. Meaning
: Slave transmission data is not available.
2. Occurrence condition
: This return code is issued when the next transmission data is not set in TBF
during slave data transmission.
3. Microcomputer processing
: If data consisting of one or more bytes is not set in TBF within the time
below, transmission may be terminated prior to its completion.
Transmission data setting time
: Approx. 1570
μ
s (mode 0)
Approx. 390
μ
s (mode 1)
0010
1. Meaning
: Slave data transmission was terminated normally.
2. Occurrence condition
: This return code is issued when as much data as the amount specified in the
data-length field has been transmitted normally. In this case, the STRQ flag of the FLG register
changes from 1 to 0.
0011
1. Meaning
: Slave data transmission was aborted.
2. Occurrence condition
: This return code is issued when communication is terminated prior to the
transmission of as much data as the amount specified in the data-length field in a communication frame.
In this case, the STRQ flag of the FLG register changes from 1 to 0.
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相關代理商/技術參數 |
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|---|---|
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