1575PCI Просмотр технического описания (PDF) - Holt Integrated Circuits

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1575PCI

3.3V Dual Transceivers with Integrated Encoder / Decoders

Holt Integrated Circuits 

HI-1575

Write TX,

(MIL-STD-1553 Status word)

D15 - D0

TXDATA

DON’T CARE

Write TX,

(MIL-STD-1553 Data word)

Read SAM,

check SENDDATA=1

SAM

TXDATA

R/W

DON’T CARE

CHA/CHB

VALID

DON’T CARE

VALID

SYNC

DON’T CARE

REG

DON’T CARE

STRB

BUSA (B)

SYNC SYNC 15 14 13

3

3

2

1

0

P SYNC SYNC 15

FIGURE 3. EXAMPLE TRANSMIT OPERATION

Read SAM

Read RXA or RXB,

(MIL-STD-1553 Data word)

BUSA (B)

RCVA (B)

R/W

CHA/CHB

REG

STRB

D15 - D0

SYNC

SYNC SYNC 15 14 13 12

2

1

0

P SYNC SYNC 15 14 13 12

DON’T CARE

DON’T CARE

DON’T CARE

VALID

SAM

FIGURE 4. EXAMPLE RECEIVE OPERATION

CHAN OR CHA/CHB

0

1

X

REG

0

0

1

Register

Receiver A Data (RXA)

Receiver B Data (RXB)

Status & Mode Register (SAM)

FIGURE 5. HI-1575 REGISTER MAP

RXA (B)

SYNC

HOLT INTEGRATED CIRCUITS

5

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