IDT 89EBPES16T4G2, Руководство пользователя

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IDT Installation of the EB16T4G2 Eval Board
EB16T4G2 Eval Board Manual 2 - 7 October 3, 2007
Notes
SMBus Master Interface
Connected to the master SMBus interface are three 16-bit I/O Expanders (PCA9555) and a serial
EEPROM (24LC512). Three I/O Expanders are used as the interface for the onboard hot-plug controllers
(MIC2591B). The lower three bits of the bus address for the I/O Expander0/2/4 are fixed as 0x0, 0x2 and
0x4, respectively.
The seven bits address for the selected EEPROM device is
0b1010_000
by default and the lower
three bit is configurable using switch S7 as described in Table 2.11.
JTAG Header
The PES16T4G2 provides a JTAG connector J5 for access to the PES16T4G2 JTAG interface. The
connector is a 2.54 x 2.54 mm pitch male 10-pin connector. Refer to Table 2.15 for the JTAG Connector J5
pin out.
Attention Buttons
The PES16T4G2 features three attention buttons, shown in Table 2.13. Each button corresponds to a
particular port and is used to initiate hot-swapping events.
S7[8] S7[7] S7[6] Bus Address
OFF OFF OFF 0b111
OFF OFF ON 0b110
OFF ON OFF 0101
OFF ON ON 0b100
ON OFF OFF 0b011
ON OFF ON 0b010
ON ON OFF 0b001
ON ON ON 0b000 (Default)
Table 2.11 EEPROM SMBus Address Setting
JTAG Connector J5
Pin Signal Direction Pin Signal Direction
1 /TRST - Test reset Input 2 GND —
3 TDI - Test data Input 4 GND —
5 TDO - Test data Output 6 GND —
7 TMS - Test mode select Input 8 GND —
9 TCK - Test clock Input 10 GND —
Table 2.12 JTAG Connector Pin Out