PI6C185-00Q(2003) Просмотр технического описания (PDF) - Pericom Semiconductor

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PI6C185-00Q
(Rev.:2003)

Precision 1-7 Clock Buffer

Pericom Semiconductor 

PI6C185-00

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Pin Description

Pin

2,3,7,14,15,18,19

5

10

11

1,6,9,16,20

4,8,12,13,17

Signal

SDRAM[0.6]

BUF_IN

SDATA

SCLK

VDD

VSS

Type

Qty.

Description

I

7

Buffered Clock Outputs

I

1

Clock Buffer Input

I/O

1

Serial Data for I2C interface, internal pull-up.

I

1

Serial Clock for I2C interface, internal pull-up

Power

5

3.3V Power Supply

Ground

5

Ground

PI6C185-00 I2C Address Assignment

A6 A5 A4 A3 A2 A1 A0 R/W

1 10 10

0

1

0

PI6C185 Serial Configuration Map

Byte0: SDRAM Active/Inactive Register

(1 = enable, 0 = disable)

Bit

Pin#

Description

Bit 7

15

SDRAM4 (Active/Inactive)

Bit 6

14

SDRAM3 (Active/Inactive)

Bit 5

-

NC (Initialize to 0)

Bit 4

7

SDRAM2 (Active/Inactive)

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

19

SDRAM6 (Active/Inactive)

Bit 0

18

SDRAM5 (Active/Inactive)

2

PS8317B 07/31/03

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