
26
Digital Circuitry
TB9100 Reciter Service Manual
© Tait Electronics Limited January 2006
3.3.2
Responsibilities
The RISC communicates with the DSP’s shared memory via a host port
interface. It loads the DSP code and monitors and controls the following
DSP operations:
■
receive path
■
transmit path
■
crosspoint switches
■
power supplies
■
PA Key output.
Figure 3.2
Reciter RISC Functional Block Diagram
Reciter
Status
External
Reference
Detect/
Select
RISC
40MHz
Clock
Synthesizers
Flash
RAM
DSP
System
Control
Bus
ASIF
PCB
Interrupt
Interrupt
Main Loop
Debug LEDs
DIP Switch
SPI
SPI
Chip Selects
Chip Selects
Lock Detects
Lock Detects
Detect
10MHz or
12.8MHz External
System I/O
System Control Bus
to BSS Modules &
Control Panel
10MHz or
12.8MHz
12.8MHz
Internal TCXO
Rx L.O.
Ex L.O.
12.8MHz
40MHz
Select
Address, Data, Control
Flash Programming Voltages
Alarm LEDs
I C
2
UART
Fan Good
SPI
Select
Rx Gate
Tx Relay
Tx Key
Hex Switch
Test
Digital PCB
RF PCB
- ARM 7 Processor
- Drivers
- SPI
- UART
- Timers
- Watchdog
- Discrete I/O
- Interrupts
Содержание TB9100
Страница 1: ...TB9100 base station Reciter Service Manual MBA 00017 01 Issue 1 January 2006...
Страница 12: ...12 TB9100 Reciter Service Manual Tait Electronics Limited January 2006...
Страница 32: ...32 Reference Switch TB9100 Reciter Service Manual Tait Electronics Limited January 2006...
Страница 86: ...86 Network Circuitry TB9100 Reciter Service Manual Tait Electronics Limited January 2006...