X80200 Datasheet, PDF (13/16 Pages) Intersil Corporation – Power Supply Swquencer with Power-up System Mnitoring

X80200, X80201, X80202, X80203, X80204
SIGNALS FROM
THE MASTER
SDA BUS
SIGNALS FROM
THE SLAVE
S
T
A ^DEVICE
R ^ID
T
SLAVE
ADDRESS
WORD
ADDRESS
S
T
DATA
O
P
1 0 1 0 A2 A1 A0 0
A
C
K
A
A
C
C
K
K
FIGURE 11. BYTE WRITE SEQUENCE
S
S
SIGNALS FROM
THE MASTER
T _{DEVICE SLAVE}
A _ID
ADDRESS
R
WORD
ADDRESS
T DEVICE SLAVE
A ID
ADDRESS
R
S
T
O
T
T
P
SDA BUS
SIGNALS FROM
THE SLAVE
1 0 1 0 _{A2 A1 A0} 0
A
C
K
1 0 1 0 A2 A1 A0 1
A
A
C
C
K
K
DATA
FIGURE 12. READ SEQUENCE
Application Section
DC-DC
#1
DC-DC
#2
PRIMARY
I/O VOLTAGES
SMBus
DC-DC
#3
CORE VOLTAGES
OPTIONAL
RC DELAY
X80200
VFB
VDDH
GATE_H
VDDM GATE_M
REF
GATE_L
SETV
ENS
VDDL
A0
GATEH_EN
A2
READY
GND
SDA SCL
H (OPTIONAL)
M
L
SYSTEM
COMPONENTS &
BOARD SUPPLIES
I/O SUPPLY
µP/
ASICs/
FPGA
CORE SUPPLY
VCORE
PULL UP
TO SET
ADDRESS HIGH
3.3V
2.7V
2.5V
2.0V
1.8V
1.25V
0.9V
V I/O
5V
3.3V
2.5V
1.35V
1.25V
Primary
5V
SMBus
FIGURE 13. TELECOM BACKPLACE/SYSTEM POWER SUPPLY VOLTAGE BASED POWER SEQUENCING
13
FN8154.0