1. Minimum, Typical, and Max" />
參數(shù)資料
型號(hào): IDT89HPES32T8ZHBXG
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 7/37頁(yè)
文件大小: 0K
描述: IC PCI SW 32LANE 8PORT 500-SBGA
標(biāo)準(zhǔn)包裝: 27
系列: PRECISE™
類(lèi)型: PCI Express 開(kāi)關(guān) - Gen1
應(yīng)用: 服務(wù)器,儲(chǔ)存,通信,嵌入式,消費(fèi)品
安裝類(lèi)型: 表面貼裝
封裝/外殼: 500-LBGA
供應(yīng)商設(shè)備封裝: 500-SBGA(31x31)
包裝: 托盤(pán)
其它名稱(chēng): 89HPES32T8ZHBXG
15 of 37
March 25, 2008
IDT 89PES32T8 Data Sheet
Figure 6 GPIO AC Timing Waveform
1. Minimum, Typical, and Maximum values meet the requirements under PCI Specification 1.1
Signal
Symbol Reference
Edge
Min Max Unit
Timing
Diagram
Reference
GPIO
GPIO[15:0]1
1. GPIO signals must meet the setup and hold times if they are synchronous or the minimum pulse width if
they are asynchronous.
Tpw_13b2
2. The values for this symbol were determined by calculation, not by testing.
None
50
ns
Table 11 GPIO AC Timing Characteristics
Signal
Symbol
Reference
Edge
Min
Max
Unit
Timing
Diagram
Reference
JTAG
JTAG_TCK
Tper_16a
none
50.0
ns
Thigh_16a,
Tlow_16a
10.0
25.0
ns
JTAG_TMS1,
JTAG_TDI
1. The JTAG specification, IEEE 1149.1, recommends that JTAG_TMS should be held at 1 while the signal applied at JTAG_TRST_N
changes from 0 to 1. Otherwise, a race may occur if JTAG_TRST_N is deasserted (going from low to high) on a rising edge of JTAG_TCK
when JTAG_TMS is low, because the TAP controller might go to either the Run-Test/Idle state or stay in the Test-Logic-Reset state.
Tsu_16b
JTAG_TCK rising
2.4
ns
Thld_16b
1.0
ns
JTAG_TDO
Tdo_16c
JTAG_TCK falling
20
ns
Tdz_16c2
2. The values for this symbol were determined by calculation, not by testing.
—20
ns
JTAG_TRST_N
Tpw_16d2
none
25.0
ns
Table 12 JTAG AC Timing Characteristics
Tpw_13b
GPIO (asynchronous input)
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