CT2500 Aeroflex Circuit Technology, CT2500 Datasheet

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CT2500

Manufacturer Part Number
CT2500
Description
CT2500 MIL-STD-1397 Type D & E Low Level Serial Interface Protocol Chip
Manufacturer
Aeroflex Circuit Technology
Datasheet
Features
• Performs Source and Sink functions
• Implements Type D & E protocols
• Burst Mode Capability
• Built in System Integrity Features
• Double Buffered Communications
• Low power CMOS
• Available in a PGA Package
• Operates over full Military temperature range -55°C to +125°C
The CT2500 provides a complete interface between the MIL-STD-1397 transceiver chip set (CT1698) and
most microprocessor based systems. The unit is monolithic and fabricated in CMOS technology, thereby
having very low power requirements. The unit handles all protocols of Type D & E interfaces including Burst
Mode Data and forced EF functions. Screened per individual test methods of MIL-STD-883. Aeroflex Circuit
Technology is an 80,000ft
eroflex Circuit T
MIL-STD-1397 Type D & E Low Level Serial
RXCLOCK
RXDATA
FIFOEN
BURST
PAREN
SO/SI
TEST
POR
32 BIT BIDIRECTIONAL
POE
CLK
PARALLEL DATA BUS
D/E
echnology
D0 - D31
2
Serial
Interface Protocol Chip
Input
Control
MIL-PRF-38534 certified facility in Plainview, N.Y.
Logic
Mode
– Data Bus Modules For The Future © SCDCT2500 REV A 6/12/98
WIOUT LDCNTRL
General Description
Figure 1 – Block Diagram
Received Data Shift Register
BIT4IN
XMIT Data Shift Register
CT2500
Received Data Latch
Received SOS/SIS
XMIT Data Latch
CMDIN
BIT4OUT
DTAIN
SOS/SIS
for XMIT
CMDOUT
CFRMSYNC
DTAOUT
TXSELECT
Output
RSTERR
Check
Contrl
Serial
Logic
I/O
CIRCUIT TECHNOLOGY
www.aeroflex.com
RCVDATA
RCVCNTRL
ERR1
ERR2
OVRFLOW
SYNCIN
WIIN
PRTYIN
STR1
STR2
FIFORD
RDYFORDTA
G20MHZ
TXDMXD
TXCMXD
ENV
ISO
9001
I

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CT2500 Summary of contents

Page 1

... Available in a PGA Package • Operates over full Military temperature range -55°C to +125°C The CT2500 provides a complete interface between the MIL-STD-1397 transceiver chip set (CT1698) and most microprocessor based systems. The unit is monolithic and fabricated in CMOS technology, thereby having very low power requirements. The unit handles all protocols of Type D & E interfaces including Burst Mode Data and forced EF functions ...

Page 2

... These options are desirable especially when operating under burst mode transmissions. Control frames are sent by strobing LDCNTRL and data is sent by strobing STR2. DATA TRANSFERS The CT2500 is built to send and receive Type D and E Control frames. It can transmit and receive 32-bit command and ...

Page 3

... If this occurs, the overflow flag, OVRFLOW, will go high. The data is considered completely read upon the completion of STR2. CMDIN O Command In Third bit of the Received Control Frame. Valid during RCVCNTRL. DTAIN O Data In Second bit of the Received Control Frame. Valid during RCVCNTRL. Aeroflex Circuit Technology I/O FUNCTION LISTING DESCRIPTION 3 SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

Page 4

... RCVDTA can be used to load all received words into the FIFO. Gating RCVDTA with WIIN selects only the data words for loading. Aeroflex Circuit Technology DESCRIPTION ERR2 0 No Error 1 Bit Count Error in Received Data/Command word or Control Frame 0 Parity Error in Received Data 1 Sync Error in Received Data/Command word or Control Frame 4 SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

Page 5

... Fourth bit of Type E control frame to be transmitted. SYNCIN O Sync In Sync position of the Received Data Latch. CFRMSYNC O Control Frame Sync In Sync position of the Received Control Frame Latch PRTYIN O Parity In Parity bit position of the Received Data Latch. Aeroflex Circuit Technology DESCRIPTION 5 SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

Page 6

... Figure 3 – Receive Timing Diagram Type Control Frame Type Control Frame Data without Parity Data with Parity 300ns typ 370ns max VALID 15ns 100ns STR1, STR2 15ns max D0-D31 VALID SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 15ns max ...

Page 7

... CLK LDCNTRL TXDMXD TXCMXD ENV RXDATA RXCLOCK RCVCNTRL Figure 4 – Control Frame Transfer Diagram CLK STR1 STR2 RDYFORDTA DATABUS TXDMXD TXCMXD ENV Figure 5 – Source Data Frame Example Diagram Aeroflex Circuit Technology 7 SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

Page 8

... Address Bits Address Decoder Figure 7 – Typical I/O Board Configuration (Source and Sink Mode) Aeroflex Circuit Technology CT2500 Internal Bus Protocol Chip Protocol Control Signals FIFO & Reg. Controls Logic Sequencer System Interrupts 8 CT1698 Transceiver Manchester Encoded Data SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

Page 9

... Signal GND POE D15 D14 D13 D12 D11 D10 D9 GND GND PRTYIN D/E D0 CMDIN DTAIN ENV ERR1 ERR2 FIFORD TXSELECT OVRFLOW RCVCNTRL RCVDTA RDYFORDTA TXCMXD TXDMXD WIIN G20MHZ GND SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

Page 10

... Package Outline – 84 Pin PGA Top View 1.010 SQ MAX Package PGA Package .100 MAX ø .018 ±.002 TYP .100 TYP .050 REF .130 REF Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800)THE-1553 SCDCT2500 REV A 6/12/98 Plainview NY (516) 694-6700 ...

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