PI6C182 Просмотр технического описания (PDF) - Pericom Semiconductor
Номер в каталоге
Компоненты Описание
Список матч
PI6C182 Datasheet PDF : 7 Pages
| |||
PI6C182
Precision 1-10 Clock Buffer
Pin Description
Pin
Symbol
2, 3, 6, 7
SDRAM[0-3]
22, 23, 26, 27 SDRAM[4-7]
11, 18
SDRAM[8-9]
9
BUF_IN
20
OE
14
15
1, 5, 10, 19, 24,
28
4, 8, 12, 17, 21,
25
13
16
SDATA
SCLOCK
VDD[0-5]
VSS[0-5]
VDDIIC
VSSIIC
Type
O
O
O
I
I
I/O
I/O
Power
Qty
Description
4 SDRAM Byte 0 clock output
4 SDRAM Byte 1 clock output
2 SDRAM Byte 2 clock output
1 Input for 1-20 buffer
1
Hi-Z states all outputs when held LOW. Has a >100kΩ internal pull-up
resistor.
1 Data pin for I2C curcuitry. Has a >100kΩ internal pull-up resistor.
1 Clock pin I2C circuitry. Has a >100kΩ internal pull-up resistor.
6 3.3V power supply for SDRAM buffer
Ground
Power
Ground
6 Ground for SDRAM buffers
1 3.3V power supply for I2C circuitry
1 Ground for I2C circuitry
OE Functionality
OE
0
1
SDRAM[0-9]
Hi-Z
BUF_IN
Notes:
1. Used for test purposes only
2. Buffers are non-inverting
I2C Address Assignment
A6 A5 A4 A3 A2 A1
1
1
0
1
0
0
Notes
1
2
A0 R/W
1
0
Serial Configuration Map
Byte0: SDRAM Active/Inactive Register
(1 = enable, 0 = disable)
Bit Pin
Description
7
NC (Initialize to 0)
6
NC (Initialize to 0)
5
NC (Initialize to 0)
4
NC (Initialize to 0)
3
7 SDRAM3 (Active/Inactive)
2
6 SDRAM2 (Active/Inactive)
1
3 SDRAM1 (Active/Inactive)
0
2 SDRAM0 (Active/Inactive)
Note:
1. Inactive means outputs are held LOW and are disabled from
switching
2
PS8165D
07/19/04
Share Link: 