參數(shù)資料
型號(hào): PM73488
廠商: PMC-SIERRA INC
元件分類: 數(shù)字傳輸電路
英文描述: 5 Gbit/s ATM Switch Fabric Element
中文描述: ATM SWITCHING CIRCUIT, PBGA596
封裝: EPBGA-596
文件頁數(shù): 86/135頁
文件大?。?/td> 1735K
代理商: PM73488
PMC-Sierra, Inc.
PM73488 QSE
L
PMC-980616
Issue 3
5 Gbit/s ATMSwitch Fabric Element
Released
Datasheet
88
8.3
Figure 39 shows the bit-level timing for the QSE.
QSE Interface Timing
Tq
RAM_CLK-to-output delay
/RAM_WR, /RAM_OE,
RAM_DATA
RAM_DATA
RAM_DATA
RAM_ADD
1.5
9
ns
Tsd
Thd
Tqa
RAM_CLK setup time
RAM_CLK hold time
RAM_CLK-to-output delay
5.2
0
1.5
ns
ns
ns
10
Figure 39. QSE Bit-Level Timing
Symbol
Parameter
Signals
Min
Max
Unit
Fseclk
Frequency of SE_CLK
SE_CLK
35
a
66
MHz
Tctsu
Control signal setup
CELL_START, CELL_24_START
8.0
ns
Tctho
Control signal hold
CELL_START, CELL_24_START
0
ns
Tseq
Output delay from SE_CLK
SE_D_OUT (15 pF),
BP_ACK_OUT(31:0),
SE_SOC_OUT(7:0)
b
1
6
ns
Output delay skew *
SE_D_OUT(0,3:0) and SE_SOC_OUT
SE_D_OUT(1,3:0) and SE_SOC_OUT
SE_D_OUT(2,3:0) and SE_SOC_OUT
SE_D_OUT(3,3:0) and SE_SOC_OUT
1.9
ns
Input delay skew *
SE_D_IN(0,3:0) and SE_SOC_IN(0)
SE_D_IN(1,3:0) and SE_SOC_IN(1)
SE_D_IN(2,3:0) and SE_SOC_IN(2)
SE_D_IN(3,3:0) and SE_SOC_IN(3)
3.5
ns
*
When the phase aligners are turned on, Tsesu and Tseho are no longer defined. However, the maximum input and output
skew and jitter on these signals with respect to the SE_SOC_IN is constrained to specification listed in this table.
Table 28.
RAM Interface Timing (Continued)
Symbol
Parameter
Conditions
Min
Max
Unit
Tctsu
Tsesu
Fseclk
Tseho
Tseq
Tctho
Tseq
SE_CLK
SE_D_IN(31:0, 3:0), BP_ACK_IN(31:0)
SE_D_OUT(31:0,3:0), BP_ACK_OUT(31:0)
CELL_START, CELL_24_START
SE_SOC_OUT(7:0)
相關(guān)PDF資料
PDF描述
PM7349 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
PM7350 Dual Serial Link, PHY Multiplexer
PM7350-PI DUAL SERIAL LINK PHY MULTIPLEXER
PM7351 OCTAL SERIAL LINK MULTIPLEXER
PM7351-BI OCTAL SERIAL LINK MULTIPLEXER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM73488PI 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC
PM73488-PI 制造商:Rochester Electronics LLC 功能描述: 制造商:PMC-Sierra 功能描述:
PM7349 制造商:PMC 制造商全稱:PMC 功能描述:Quad J2, E3 and DS-3 Framer