Figure 11-1, Figure 11-2, Figure 11-1. bridge mode – Rainbow Electronics DS31256 User Manual
Page 148: Figure 11-2. bridge mode with arbitration enabled
DS31256
148 of 181
Figure 11-1. Bridge Mode
Figure 11-2. Bridge Mode with Arbitration Enabled
T1 / E1
Framer or
Transceiver
Local Bus
DS31256
ENVOY
Host
Processor
and Main
Memory
PCI /
Custom
Bus
T1 / E1
Framer or
Transceiver
T1 / E1
Framer or
Transceiver
T1 / E1
Framer or
Transceiver
T1 / E1
Framer or
Transceiver
Local Bus
DS31256 ENVOY
Host
Processor
and Main
Memory
PCI /
Custom
Bus
Local CPU that Handles
the Real-Time Tasks Required
by the T1 / E1 Interfaces
Local RAM &
ROM
1. Request
Bus Access
2. Bus Access
Granted
3. Transaction
Occurs
1
2
3
T1 / E1
Framer or
Transceiver
T1 / E1
Framer or
Transceiver
T1 / E1
Framer or
Transceiver
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