AMD

25

Am7992B

SWITCHING WAVEFORMS

1

2

3

4

5

6

7

8

Bit Number

INTRCLK

PLL CLK

4.5 V

1.5 V

3 V

0

+4.5 V

1.5 V

0

–1.5 V

Receive+

Receive–

Receive

±

RX

+3 V

0

+4.5 V

+1.5 V

0

–1.5 V

+1.5 V

–4.5 V

Receive+

Receive–

Receive

±

RX

+3 V

0

+4.5 V

+1.5 V

0

–1.5 V

+1.5 V

Receive+

Receive–

Receive

±

RX

+4.5 V

+1.5 V

+3 V

+1.5 V

0

–1.5 V

0

Receive+

Receive–

Receive

±

RX

55

56

57

58

BCC

BCC

BCC

BCC

BCC

BCC

BCC

BCC

BCB

1/4 Bit Cell

0 V

4.5 V

Strobe

RX

BCB

Strobe

RX

Strobe

RX

Strobe

RX

1/4 Bit Cell

BCB

03378I-24

(Note A)

(Note B)

(Note C)

(Note D)

Notes:

A. Case 1, 5 Data Bit Pattern 0, 1

Rising clock edge moved toward 1/4 bit cell RCLK data strobe. Case 1 uses bit 5, Case 5 uses bit 55.

B. Case 2, 6 Data Bit Pattern 1, 0

Falling clock edge moved toward 1/4 bit cell RCLK data strobe. Case 2 uses bit 6, Case 6 uses bit 56.

C. Case 3, 7 Data Bit Pattern 1, 1

Falling bit cell edge moved toward 1/4 bit cell RCLK data strobe. Case 3 uses bit 6, Case 7 uses bit 56.

D. Case 4, 8 Data Bit Pattern X, 0

Rising bit cell edge moved toward 1/4 bit cell RCLK data strobe. Case 4 uses bit 5, Case 8 uses bit 55.

tEJI

tEJ51

D

tEJI

tEJ51

C

tEJI

tEJ51

B

A

tEJI

tEJ51

Input Jitter Timing