Eight Frame MDAT Transmitter
IP Module

Table of contents

Description

The eight frame MDAT transmitter is based on the commercially available General Purpose IndustryPack Module from BIRA Systems. It can generate up to eight MDAT frames with different delays from TCLK event $07 (720Hz). The module also contains a 16 bit serial NRZ decoder with a 32 word FIFO.

Register Description

There are three sets of 16 bit registers on the module. The first set are the typecode registers; these determine the typecode for the transmitted frame (Only the lower eight bits are used.) . The second set are the data registers; they determine the data for the transmitted frame. The last set are the delay registers; these determine the delay in microseconds from the $07 TCLK event after which the frame will be transmitted. A delay of zero will disable the frame.

The serial NRZ decoder can generate an interrupt when it receives data. Only God Herself knows how to do this.

The serial NRZ decoder was only used for the Recycler frames.

Eight Frame MDAT Transmitter Registers
Typecode Registers
AddressDescription
0x00Typecode 0
0x02Typecode 1
0x04Typecode 2
0x06Typecode 3
0x08Typecode 4
0x0ATypecode 5
0x0CTypecode 6
0x0ETypecode 7
Data Registers
AddressDescription
0x10Data 0
0x12Data 1
0x14Data 2
0x16Data 3
0x18Data 4
0x1AData 5
0x1CData 6
0x1EData 7
Delay Registers
AddressDescription
0x20Delay 0
0x22Delay 1
0x24Delay 2
0x26Delay 3
0x28Delay 4
0x2ADelay 5
0x2CDelay 6
0x2EDelay 7
Miscellaneous Registers
0x40NRZ FIFO
0x42NRZ FIFO Word count
0x60-0x6FInterrupt Control
0x70-0x7FInterrupt MUX

For reference, Motorola MVME-162 Base addresses are given below:

MVME-162
IP-A0xFFF58000
IP-B0xFFF58100
IP-C0xFFF58200
IP-D0xFFF58300
IP-Carrier
IP-A0xFFFF6000
IP-B0xFFFF6100
IP-C0xFFFF6200
IP-D0xFFFF6300

Current Implementations

Frame Typecode(s)Node NameLocation
0x30,0x31,0x40,0x41,0x54,0x55,0x62MECARMI60 North rack MI60202
0x05,0x12,0x56,0x57,0x86TLGMAC Room rack #12
0x73,0x74MIBEAMMI62
0x91MI14TOMI14
0x92MI30TOMI30

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