參數(shù)資料
型號: SC2000
廠商: NXP SEMICONDUCTORS
元件分類: 路由/交換
英文描述: Universal Timeslot Interchange
中文描述: TELECOM, DIGITAL TIME SWITCH, PQCC68
封裝: PLASTIC, LCC-68
文件頁數(shù): 29/44頁
文件大?。?/td> 221K
代理商: SC2000
2000 Sep 07
29
Philips Semiconductors
Preliminary specification
Universal Timeslot Interchange
SC2000
Table 8.
Local Bus Interface Timing — PEB Resource Module With Switching
Symbol
Parameter
Mn
Typ
Max
Unit
t1a
CLKR high time (1.544 Mbps)
323
ns
t1b
CLKR high time (2.048 Mbps)
244
ns
t2a
CLKR low time (1.544 Mbps)
323
ns
t2b
CLKR low time (2.048 Mbps)
244
ns
t3a
CLKR period (1.544 Mbps)
647
ns
t3b
CLKR period (2.048 Mbps)
488
ns
t4
SO_CLK, SI_CLK
delay fromCLKR
SO_CLK, SI_CLK
delay fromCLKR
FSYNCR setup to CLKR
FSYNCR hold fromCLKR
SO_FS, SI_FS
delay fromFSYNCR
SO_FS, SI_FS
delay fromFSYNCR
SO_MS
delay fromMSYNCR
SO_MS
delay fromMSYNCR
SI_MS
delay fromL_MSYNCT
SI_MS
delay fromL_MSYNCT
35
ns
t5
35
ns
t6
5
ns
t7
15
ns
t8
35
ns
t9
35
ns
t10
35
ns
t11
35
ns
t12
35
ns
t13
35
ns
t14
SO float to valid delay fromCLKR
40
ns
t15
SO valid to valid delay fromCLKR
SO valid to float delay fromCLKR
40
ns
t16
25
ns
t17
SI setup to CLKR
0
ns
t18
SI hold fromCLKR
25
ns
t19
SER enable delay fromCLKR
70
ns
t20
SER valid delay fromCLKR
70
ns
t21
SER disable delay fromCLKR
70
ns
t22
SER setup to CLKR
0
ns
t23
SER hold fromCLKR
25
ns
t24
TSX*
delay fromCLKR
35
ns
t25
TSX*
delay fromCLKR
70
ns
t26
TSX*setup to CLKR
0
ns
t27
TSX*hold fromCLKR
25
ns
Notes:
1. Timng measured with 100 pF load on all Local Bus outputs, 200 pF 220/330
termnation on all PEB outputs. Open collector low to high transitions
include 43 ns delay fromhi-Z to 2.4 V.
2. SER = L_SERT, SERR, R_SERT, SERT.
3. TSX*= L_TSX* R_TSX*
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