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Rainbow Electronics DS2141A User Manual

Page 27

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DS2141A

021997 27/35

TRANSMIT SIDE BOUNDARY TIMING (WITH ELASTIC STORE(S) DISABLED)

TCLK

TSER

1

TPOS,
TNEG

1

TSYNC

2

TSYNC

3

TCHCLK

CHANNEL 2

LSB MSB

LSB

MSB

F

CHANNEL 1

LSB MSB

CHANNEL 1

LSB

MSB

LSB MSB

CHANNEL 24

F

CHANNEL 23

TCHBLK

4

TLCLK

TLINK

Don’t Care

NOTES:

1. There is a 10 TCLK delay from TSER to TPOS, TNEG.

2. TSYNC is in the input mode (TCR2.2=0).

3. TSYNC is in the output mode (TCR2.2=1).

4. TCHBLK is programmed to block Channel 1.

LINE INTERFACE CONTROL TIMING

LI_CS

LI_SCLK

LI_SDI

1

LI_SDI

2

0

0

0

0

0

0

0

CR0 CR1 CR2 CR3 CR4 CR5 CR6 CR7

CR0 CR1 CR2 CR3 CR4 CR5 CR6 CR7

0

0

0

0

0

1

1

0

1

324 ns

324 ns

324 ns

NOTES:

1. A write to CRB1 will cause the DS2141A to output this sequence.

2. A write to CRB2 will cause the DS2141A to output this sequence.

3. Timing numbers are based on RCLK=1.544 MHz with 50% duty cycle.