FS8107E

Page 7

April 2003

13-bit R-counter latch and the remaining 3 LSBs are used to control testing modes and

should be set as follows for normal operation: R14 = high, R15 = low, R16 = low. To dis-

able LD output (i.e. set LD low), R14 should be set low.

Serial input data timing waveforms are shown in Fig. 2.

Fig. 1 – Serial input data format

Fig. 2 – Serial input data timing waveforms

16-bit data for N-counter

13-bit data for R-counter

t

SU1

t

SU2

t

HOLD

DATA

CLK

LE

DATA

CLK

LE

2 3456789 10 11 12 13 14 15 16 17

1