Introduction
7
1.2
Block Diagram
Fig. 1-2 shows the block diagram of the ES1231.1-A with the major functional
units.
Fig. 1-2
Block Diagram of the ES1231.1-A
VME Slave Interface
The board has a VME slave interface which supports A24/D16 master board
accesses. The A40/MD32 mode will also be supported in the future. The slave
interface converts accesses to the VME bus into accesses to corresponding
memory areas on the board.
Power Supply
The power supply makes voltages of 5 V, 3.3 V and 2.5 V available. ICs with a
low supply voltage are generally used to keep the power consumption down.
PowerPC
The PowerPC and the connected memory modules can be addressed via the
VME bus.
Data Acquisition Memory Controller (DAMC)
The Data Acquisition Memory Controller (DAMC) has a fast RISC processor
designed for applications in real-time data acquisition and real-time addressing
of external modules.
Slave
Interface
VME64x
A24/D16
A40/MD32
DAMC
SDRAM
16MB on Board
VME
64x
Buffe
r
ETK
DPRAM
32 Bit
128 kB
DPRAM
16 Bit
64 kB
Async.
Boot-
FLASH
16 Bit
1 MB
Sync.
Burst-
SRAM
32 Bit
1 MB
Buffer
PowerPC
MPC555
IRQs
IRQs
Power
Supply
5 V
2.5 V
3.3 V
5 V
Serial ETK
Interface
(8 MBit)
Phyter
Transformer
ES1231_1-ug-en.book Seite 7 Montag, 12. Mai 2003 12:37 12
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