參數(shù)資料
型號: 89HPES22H16ZABR
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA484
封裝: 23 X 23 MM, 1 MM PITCH, ROHS COMPLIANT, FCBGA-484
文件頁數(shù): 36/36頁
文件大?。?/td> 784K
代理商: 89HPES22H16ZABR
9 of 36
November 17, 2008
IDT 89HPES22H16 Data Sheet
PERSTN
I
Fundamental Reset. Assertion of this signal resets all logic inside the PES22H16 and
initiates a PCI Express fundamental reset.
RSTHALT
I
Reset Halt. When this signal is asserted during a PCI Express fundamental reset, the
PES22H16 executes the reset procedure and remains in a reset state with the Master
and Slave SMBuses active. This allows software to read and write registers internal to
the device before normal device operation begins. The device exits the reset state
when the RSTHALT bit is cleared in the PA_SWCTL register by an SMBus master.
SWMODE[3:0]
I
Switch Mode. These configuration pins determine the PES22H16 switch operating
mode. These pins should be static and not change following the negation of PERSTN.
0x0 - Normal switch mode
0x1 - Normal switch mode with Serial EEPROM initialization
0x2 through 0x7 - Reserved
0x8 - Normal switch mode with upstream port failover (port 0 selected as the
upstream port)
0x9 - Normal switch mode with upstream port failover (port 2 selected as the
upstream port)
0xA - Normal switch mode with Serial EEPROM initialization and upstream port
failover (port 0 selected as the upstream port)
0xB - Normal switch mode with Serial EEPROM initialization and upstream port
failover (port 2 selected as the upstream port)
0xC through 0xF - Reserved
Signal
Type
Name/Description
JTAG_TCK
I
JTAG Clock. This is an input test clock used to clock the shifting of data into or out of
the boundary scan logic or JTAG Controller. JTAG_TCK is independent of the system
clock with a nominal 50% duty cycle.
JTAG_TDI
I
JTAG Data Input. This is the serial data input to the boundary scan logic or JTAG
Controller.
JTAG_TDO
O
JTAG Data Output. This is the serial data shifted out from the boundary scan logic or
JTAG Controller. When no data is being shifted out, this signal is tri-stated.
JTAG_TMS
I
JTAG Mode. The value on this signal controls the test mode select of the boundary
scan logic or JTAG Controller.
JTAG_TRST_N
I
JTAG Reset. This active low signal asynchronously resets the boundary scan logic
and JTAG TAP Controller. An external pull-up on the board is recommended to meet
the JTAG specification in cases where the tester can access this signal. However, for
systems running in functional mode, one of the following should occur:
1) actively drive this signal low with control logic
2) statically drive this signal low with an external pull-down on the board
Table 6 Test Pins
Signal
Type
Name/Description
VDDCORE
I
Core VDD. Power supply for core logic.
VDDI/O
I
I/O VDD. LVTTL I/O buffer power supply.
VDDPE
I
PCI Express Digital Power. PCI Express digital power used by the digital power of
the SerDes.
Table 7 Power and Ground Pins
Signal
Type
Name/Description
Table 5 System Pins (Part 2 of 2)
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