SAB 82525
SAB 82526
SAF 82525
SAF 82526
HSCX with SAB 80186 Microprocessor
and SAB 82258 Advanced DMA Controller (ADMA)
In applications, where two high-speed channels are required, a 16-bit system with SAB 80186
CPU and SAB 82258 ADMA is suitable. This is shown in figure 5.
+5 V
CS
DRQTA
DRQRA
INT
IM1
INTn
PSCn
DREQ0
DREQ1
Serial
Channel A
HOLD
HLDA
DACK0
DACK1
&
&
DACKA
SAB 80186
CPU
SAB 82258
ADMA
SAB 82525
DREQ2
DREQ3
DRQTB HSCX
DRQRB
Serial
Channel B
DACK2
DACK3
DACKB
AD0 - AD15
S0 - S2
AD0 - AD15
S0 - S2
A0 - A6
D0 - D7
Bus
Control
Latches
Transceiver
System Bus
A0 - A6
D0 - D7
System
Memory
ITS00950
Figure 5
HSCX with SAB 80186 CPU/SAB 82258 ADMA
Semiconductor Group
20
SIEMENS [ Siemens Semiconductor Group ]
