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89HPES6T5ZABC Datasheet(PDF) 7 Page - Integrated Device Technology |
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89HPES6T5ZABC Datasheet(HTML) 7 Page - Integrated Device Technology |
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7 / 28 page  7 of 28 September 7, 2007 IDT 89HPES6T5 Data Sheet RSTHALT I Reset Halt. When this signal is asserted during a PCI Express fundamental reset, the PES6T5 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 opera- tion begins. The device exits the reset state when the RSTHALT bit is cleared in the PA_SWCTL register by an SMBus master. SWMODE[2:0] I Switch Mode. These configuration pins determine the PES6T5 switch operating mode. 0x0 - Normal switch mode 0x1 - Normal switch mode with Serial EEPROM initialization 0x2 - through 0xF Reserved WAKEN I/O Wake Input/Output. The WAKEN signal is an input or output. The WAKEN signal input/output selection can be made through the WAKEDIR bit setting in the WAKEUPCNTL register. 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. VDDIO 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. VDDAPE I PCI Express Analog Power. PCI Express analog power used by the PLL and bias generator. VTTPE I PCI Express Termination Power. VSS I Ground. Table 7 Power and Ground Pins Signal Type Name/Description Table 5 System Pins (Part 2 of 2) |
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