參數(shù)資料
型號(hào): XRT79L72IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
中文描述: ATM NETWORK INTERFACE, PBGA456
封裝: 27 X 27 MM, 1 MM PITCH, PLASTIC, BGA-456
文件頁數(shù): 65/72頁
文件大?。?/td> 441K
代理商: XRT79L72IB
xr
2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
PRELIMINARY
XRT79L72
REV. P1.0.2
62
RECEIVE PAYLOAD DATA OUTPUT INTERFACE
RECEIVE PAYLOAD DATA OUTPUT INTERFACE - TIMING REQUIREMENTS
T
ABLE
11: T
IMING
I
NFORMATION
FOR
THE
R
ECEIVE
P
AYLOAD
D
ATA
O
UTPUT
I
NTERFACE
B
LOCK
Test Conditions: TA = 25°C, VDD = 3.3V + 5% unless otherwise specified
S
YMBOL
P
ARAMETER
M
IN
.
T
YP
.
M
AX
.
U
NITS
C
ONDITIONS
Receive Payload Data Output Interface Timing - Serial Mode Operation (See Figure 17)
t
50
Rising edge of RxClk to Payload Data (RxSer) out-
put delay
13
16
ns
ns
DS3 Applications
E3 Applications
t
51
Rising edge of RxClk to RxFrame output delay
13
16
ns
ns
DS3 Applications
E3 Applications
t
52
Rising edge of RxClk to RxOHInd output delay.
13
16
ns
ns
DS3 Applications
E3 Applications
Receive Payload Data Output Interface Timing - Nibble Mode Operation (see Figure 18)
Falling edge of RxClk to rising edge of RxFrame out-
put delay
Falling edge of RxClk to rising edge of RxNib[3:0]
output delay
t
53
2.1
ns
t
54
2
ns
F
IGURE
17. T
IMING
D
IAGRAM
FOR
THE
R
ECEIVE
P
AYLOAD
D
ATA
O
UTPUT
I
NTERFACE
(S
ERIAL
M
ODE
)
XRT79L72 Receive Payload Data I/F Signals
RxClk
RxSer
RxFrame
RxOHInd
Payload[4702]
Payload[4703]
X-Bit
Payload[0]
t50
t51
t52
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