HD6417618 datasheet(40/646 Pages) RENESAS

40 / 646 page

Section 1 Overview

Rev. 6.00 Jun. 12, 2007 Page 8 of 610

REJ09B0131-0600

1.4

Pin Functions

Table 1.1

Pin Functions

Classifi-

cation

Abbr.

I/O

Pin Name

Description

Power

supply

Vcc

Input

Power Supply

Power supply for the internal logic of this LSI. All the Vcc

pins must be connected to the system power supply. This

LSI does not operate correctly if there is a pin left open.

Vss

Input

Ground

Ground pins. All the Vss pins must be connected to the

system power supply (0 V). This LSI does not operate

correctly if there is a pin left open.

VccQ

Input

Power Supply

Power supply for input/output pins. All the VccQ pins must

be connected to the system power supply. This LSI does not

operate correctly if there is a pin left open.

VssQ

Input

Ground

Ground pins. All the VssQ pins must be connected to the

system power supply (0 V). This LSI does not operate

correctly if there is a pin left open.

Clock

Vcc (PLL1)

Input

Power Supply

for PLL1

Power supply pin for the on-chip PLL1 oscillator

Vss (PLL1)

Input

Ground for

PLL1

Ground pin for the on-chip PLL1 oscillator

Vcc (PLL2)

Input

Power Supply

for PLL2

Power supply pin for the on-chip PLL2 oscillator

Vss (PLL2)

Input

Ground for

PLL2

Ground pin for the on-chip PLL2 oscillator

EXTAL

Input

External Clock Connects to a crystal resonator. An external clock is also

input on this pin. For details on connection of an external

clock, see section 8, Clock Pulse Generator (CPG).

XTAL

Output Crystal

Connects to a crystal resonator.

CKIO

Output System Clock

Supplies the system clock to external devices.

CK_PHY

Output PHY Clock

Supplies the clock for external IEEE802.3-PHY.

Operating

mode

control

MD5,

MD3 to MD0

Input

Mode Setting

Sets operating mode. The signal levels of these pins must

not be changed during operation.

Pins MD2 to MD0 are used for setting clock mode, pin MD3

is for setting bus width mode for area 0, and pin MD5 is for

setting endian.

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