參數(shù)資料
型號： SAF82526N
廠商： INFINEON TECHNOLOGIES AG
英文描述： Data Communications ICs
中文描述： 數(shù)據(jù)通信集成電路
文件頁數(shù)： 19/126頁
文件大?。?/td> 730K
代理商： SAF82526N
Semiconductor Group
19
82525
82526
82525
82526
SAB
SAB
SAF
SAF
HSCX with SAB 80188 Microprocessor
A system with minimized additional hardware expense can be with a SAB 80188
microprocessor as shown in
figure 4.
Figure 4
HSCX with SAB 80188 CPU
The HSCX is connected to the demultiplexed system bus. Data transfer for one serial channel
can be done by the 2-channel on-chip DMA controller of the SAB 80188, the other channel is
serviced by interrupt. Since the SAB 80188 does not provide DMA acknowledge outputs, data
transfer from/to HSCX is controlled via CS, RD or WR
address information (A0 … A6) and the
DACKA, DACKB inputs are not used.
This solution supports applications with a high speed data rate in one serial channel with
minimum hardware expense making use of the on-chip peripheral functions of the SAB 80188
(chip select logic, interrupt controller, DMA controller).
DRQ1
DRQRA
System
Memory
System Bus
ITS00949
DRQTA
DRQ0
D0 - D7
A0 - A6
Serial
Channel A
Serial
Channel B
D0-D7
A0-A6
Latches
Transceiver
A8 - A15
AD0 - AD7
SAB 80188
CPU
HSCX
SAB 82525
INTn
PSCn
+5 V
DACKA
ALE
DACKB
CS
+5 V
INT
IM1
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