Datasheet

DS2148/DS21Q48
68 of 73
Table 10-4. AC Characteristics—Receive Side
(V
DD
= 5.0V ±5%, T
A
= -40°C to +85°C.) (See Figure 10-9)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
488 ns 1
RCLK Period t
CP
648 ns 2
t
CH
200 ns 3
RCLK Pulse Width
t
CL
200 ns 3
t
CH
150 ns 4
RCLK Pulse Width
t
CL
150 ns 4
Delay RCLK to RPOS, RNEG,
PBEO, RBPV Valid
t
DD
50 ns
NOTES:
1) E1 Mode.
2) T1 or J1 Mode.
3) Jitter attenuator enabled in the receive path.
4) Jitter attenuator disabled or enabled in the transmit path.
Figure 10-9. Receive Side Timing
t
DD
RPOS, RNEG
RCLK
2
CL
t
t
CP
CH
t
RCLK
1
PBEO
t
DD
bit
error
BPV/
EXZ/
CV
PRBS Detector Out of Sync
RNEG
3
BPV/
EXZ/
CV
NOTE 1: RCES = 1 (CCR2.0) OR CES = 1.
NOTE 2: RCES = 0 (CCR2.0) OR CES = 0.
NOTE 3: RNEG IS IN NRZ MODE (CCR1.6 = 1).