參數(shù)資料
型號(hào)： XRT79L73IB
廠商： EXAR CORP
元件分類： 數(shù)字傳輸電路
英文描述： 3 - 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)： 57/71頁
文件大?。?/td> 495K
代理商： XRT79L73IB
t
3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
PRELIMINARY
XRT79L73
REV. P1.0.0
55
TRANSMIT PAYLOAD DATA INPUT INTERFACE
TRANSMIT PAYLOAD DATA INPUT INTERFACE - TIMING REQUIREMENTS
T
ABLE
9: T
IMING INFORMATION FO RTHE
T
RNASMIT
P
AYLOAD
D
ATA
I
NPUT
I
NTERFACE BLOCK
t11
TxUClav signal valid (not Hi-Z) from first TxUClk rising edge of
valid and correct TxUAddr[4:0]
3.6
9.7
ns
t12
TxUClav signal Hi-Z from first TxUClk rising edge of different
TxUAddr[4:0]
3.6
9.7
ns
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
Transmit Payload Data Input Interface - Loop-Timed/Serial Mode (See Figure 11)
t
1
Payload data (TxSer) set-up time to rising edge of
RxOutClk
12
ns
t
2
Payload data (TxSer) hold time, from rising edge of
RxOutClk
0
ns
t
3
RxOutClk to TxFrame output delay
5
ns
t
4
RxOutClk to TxOHInd output delay
6
ns
Transmit Payload Data Input Interface - Local Timed/Serial Mode (See Figure 12)
t
5
Payload data (TxSer) set-up time to rising edge of
TxInClk
4
ns
t
6
Payload data (TxSer) hold time, from rising edge of
TxInClk
0
ns
t
7
TxFrameRef set-up time to rising edge of TxInClk
2
ns
Framer IC is
Frame Slave
t
8
TxFrameRef hold-time, from rising edge of TxInClk
0
ns
Frame IC is
Frame Slave
t
9
TxInClk to TxOHInd output delay
15
ns
t
10
TxInClk to TxFrame output delay
13
ns
Transmit Payload Data Input Interface - Looped-Timed/Nibble Mode (See Figure 13)
t
11
TxNib set-up time to third rising edge of RxOutClk
30
ns
t
12
Payload Nibble hold time, from latching edge of
RxOutClk
30
ns
t
13
TxNibClk to TxNibFrame output delay
25
31
ns
ns
DS3 Applications
E3 Applications
t
13A
Max Delay of Rising Edge of TxNibClk to Data Valid
on TxNib[3:0]
20
27
ns
ns
DS3 Applications
E3 Applications
Transmit Payload Data Input Interface - Local-Timed/Nibble Mode (See Figure 14
T
ABLE
8: T
IMING
I
NFORMATION FOR THE
T
RANSMIT
UTOPIA I
NTERFACE
B
LOCK
S
YMBOL
P
ARAMETER
M
IN
.
T
YP
M
AX
.
U
NITS
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