6-5
INV
V
RT
V
RM3
V
RM2
V
RM1
V
RB
(ECL)
(TTL)
CLK
(ECL)
(TTL)
NRSET
SELECT
CLK OUT
P2D7
(MSB)
P2D6
P2D5
P2D4
P2D3
P2D2
P2D1
P2D0
P1D7
P1D6
P1D5
P1D4
P1D3
P1D2
P1D1
P1D0
(LSB)
(MSB)
(LSB)
V
IN
R1
R/2
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/2
R2
1/2
SELECTOR
TTL
OUT
6 bits
8 bits 8 bits
8 bits
ENCODER
LATCH A
TTLOUT
LATCH B
TTLOUT
6 bits LATCH + ENCODER
6 bits
6 bits
6 bits
255
254
193
192
191
129
128
127
126
65
64
63
1
0
DELAY
Fig. 6-2-4