参数资料
型号: DS21Q58LN
英文描述: E1 Quad Transceiver
中文描述: 素E1通道收发器
文件页数: 69/74页
文件大小: 647K
代理商: DS21Q58LN
DS21Q58 E1 Quad Transceiver
69 of 74
26.4 Receive AC Characteristics
Table 26-4. AC Characteristics—Receive
(V
DD
= 3.3V 5%, T
A
= 0°C to +70°C for DS21Q58L; V
DD
= 3.3V 5%, T
A
= -40°C to +85°C for DS21Q58LN.)
(
Figure 26-9
and
Figure 26-10
)
PARAMETER
SYMBOL
SYSCLK Period
t
SP
t
SH
SYSCLK Pulse Width
t
SL
RSYNC Setup to SYSCLK Falling
t
SU
RSYNC Pulse Width
t
PW
Delay RCLK to RSER Valid
t
D1
Delay RCLK to RSYNC, OUTA, OUTB
t
D2
Delay SYSCLK to RSER Valid
t
D3
Delay SYSCLK to RSYNC, OUTA,
OUTB
Note 1:
SYSCLK = 2.048MHz.
CONDITIONS
(Note 1)
MIN
122
50
50
20
50
TYP
488
MAX
t
SH
- 5
50
50
50
UNITS
ns
ns
ns
ns
ns
ns
ns
t
D4
50
ns
Figure 26-9. Receive AC Timing (Receive Elastic Store Disabled)
t
D1
tD2
RSER
RSYNC
3
OUTA/OUTB
2
(
RCLK
)
MSB OF
CHANNEL 1
OUTA/OUTB
4
OUTA/OUTB
5
OUTA/OUTB
1
(RCLK)
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 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).
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