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PI6C185-01

Precision 1-5 Clock Buffer

Pericom Semiconductor 

PI6C185-01

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Pin Description

Pin

Signal

2,3,11,12,15 SDRAM [0.4]

5

BUF_IN

7

SDATA

8

SCLK

1,6,13,16

VDD

4,9,10,14

VSS

Type

I

I

I/O

I

Power

Ground

Qty

Description

5 Buffered Clock Outputs

1 Clock Buffer Input

1 Serial Data for I2C interface, internal pull-up

1 Serial Clock for I2C interface, internal pull-up

4 3.3V Power Supply

4 Ground

I2C Address Assignment

A6 A5 A4 A3 A2 A1 A0 R/W

110 10 0 1

0

Serial Configuration Map

Byte0: SDRAM Active/Inactive Register

(1 = enable, 0 = disable)

Bit Pin #

Description

Bit 7 12 SDRAM3 (Active/Inactive)

Bit 6 11 SDRAM2 (Active/Inactive)

Bit 5

- NC (Initialize to 0)

Bit 4

- NC (Initialize to 0)

Bit 3

- NC (Initialize to 0)

Bit 2

- NC (Initialize to 0)

Bit 1 3 SDRAM1 (Active/Inactive)

Bit 0 2 SDRAM0 (Active/Inactive)

Note:

Inactive means outputs are held LOW and are

disabled from switching

Byte1: SDRAM Active/Inactive Register

(1 = enable, 0 = disable)

Bit Pin#

Description

Bit 7

- NC (Initialize to 0)

Bit 6

- NC (Initialize to 0)

Bit 5

- NC (Initialize to 0)

Bit 4

- NC (Initialize to 0)

Bit 3

- NC (Initialize to 0)

Bit 2

- NC (Initialize to 0)

Bit 1

- NC (Initialize to 0)

Bit 0 15 SDRAM4 (Active/Inactive)

2

PS8318E 10/14/04

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