FS6370-01 Datasheet, PDF (1/25 Pages) List of Unclassifed Manufacturers – EEPROM Programmable 3-PLL Clock Generator IC

FS6370-01
EEPROM Programmable 3-PLL Clock Generator IC
1.0 Features
• Just-in-time customization of clock frequencies via
internal non-volatile 128-bit serial EEPROM
• I²C^ä-bus serial interface
• Three on-chip PLLs with programmable Reference
and Feedback Dividers
• Four independently programmable muxes and post
dividers
• Programmable power-down of all PLLs and output
clock drivers
• Tristate outputs for board testing
• One PLL and two mux/post-divider combinations
can be modified via SEL_CD input
• 5V to 3.3V operation
• Accepts 5MHz to 27MHz crystal resonators
• ROM-based device available for cost reduction mi-
gration path – contact your AMI sales representative
for more information
2.0 Description
The FS6370 is a CMOS clock generator IC designed to
minimize cost and component count in a variety of elec-
tronic systems. Three EEPROM-programmable phase-
locked loops (PLLs) driving four programmable muxes
and post dividers provide a high degree of flexibility.
An internal EEPROM permits just-in-time factory pro-
gramming of devices for end user requirements.
Figure 1: Pin Configuration
VSS 1
SEL_CD 2
PD/SCL 3
VSS 4
XIN 5
XOUT 6
OE/SDA 7
VDD 8
16 VDD
15 CLK_A
14 VDD
13 CLK_B
12 CLK_C
11 VSS
10 CLK_D
9 MODE
16-pin (0.150”) SOIC
Figure 2: Block Diagram
XIN
XOUT
Reference
Oscillator
MODE
PD/SCL
OE/SDA
Power Down
Control
I²C-bus
Interface
EEPROM
PLL A
PLL B
PLL C
Mux A
Post
Divider A
Mux B
Post
Divider B
Mux C
Post
Divider C
CLK_A
CLK_B
CLK_C
SEL_CD
Mux D
Post
Divider D
CLK_D
FS6370
I²C is a licensed trademark of Philips Electronics, N.V. American Microsystems, Inc., reserves the right to change the detail specifications as may be required to permit improvements in the design of
its products.