Datasheet

DS21Q50
82 of 87
21.4 Receive AC Characteristics
AC CHARACTERISTICS—RECEIVER
(V
DD
= 3.3.0V ±5%, T
A
= 0°C to +70°C for DS21Q50L; V
DD
= 3.3.0V ± 5%, T
A
= -40°C to +85°C for DS21Q50LN.)
PARAMETER SYMBOL MIN TYP MAX UNITS
SYSCLK Period (Note 1) t
SP
122 488 ns
t
SH
50
SYSCLK Pulse Width
t
SL
50
ns
RSYNC Setup to SYSCLK
Falling
t
SU
20 t
SH
- 5 ns
RSYNC Pulse Width t
PW
50 ns
Delay RCLK to RSER Valid t
D1
50 ns
Delay RCLK to RSYNC,
OUTA, OUTB
t
D2
50 ns
Delay SYSCLK to RSER Valid t
D3
50 ns
Delay SYSCLK to RSYNC,
OUTA, OUTB
t
D4
50 ns
Note 1: SYSCLK = 2.048MHz.
Figure 21-9. Receive AC Timing (Receive Elastic Store Disabled)
t
D1
3
t
D2
RSER
RSYNC
OUTA / OUTB (*RCLK)
MSB of
Channel 1
2
OUTA / OUTB
4
OUTA / OUTB
5
OUTA / OUTB (RCLK)
1
NOTE 1: OUTA OR OUTB CONFIGURED TO OUTPUT RCLK (NONINVERTED).
NOTE 2: OUTA OR OUTB CONFIGURED TO OUTPUT RCLK (INVERTED).
NOTE 3: RSYNC IS IN THE OUTPUT MODE (RCR1.5 = 0).
NOTE 4: OUTA OR OUTB CONFIGURED TO OUTPUT RFSYNC, CRC4 MF SYNC, OR CAS MF SYNC (NONINVERTED).
NOTE 5: OUTA OR OUTB CONFIGURED TO OUTPUT RFSYNC, CRC4 MF SYNC, OR CAS MF SYNC (INVERTED).