uP9503P

10

uP9503P-DS-F0000, June 2017

www.upi-semi.com

Table 2. PROG Resistor Setting

A

D

D

V

)

V

(

t

o

o

b

V

s

u

B

M

S

s

s

e

r

d

d

A

k

(

e

u

l

a

V

r

o

t

s

i

s

e

R

2

R

/

1

R

Ω

)

e

s

a

h

P

2

+

3e

s

a

h

P

1

+

4e

s

a

h

P

0

+

5

1

R2

R1

R2

R1

R2

R

5

5

.

18

82

9

.

47

3

.

31

6

.

4

24

8

.

6

1A

NA

N

5

.

18

87

2

.

47

7

.

33

3

.

1

23

8

.

8

1A

NA

N

5

3

.

18

86

7

.

37

2

.

42

8

.

8

14

3

.

1

2A

NA

N

2

I

V

S

w

o

ll

o

F

s

n

o

i

t

c

e

n

n

o

C

)

1

e

l

b

a

T

(

8

87

3

.

32

9

.

44

8

.

6

12

6

.

4

21

3

.

0

31

3

.

4

4

5

5

.

1A

85

0

.

32

8

.

54

2

.

5

11

.

9

2A

NA

N

5

.

1A

88

7

.

21

1

.

71

9

.

3

16

5

.

5

3A

NA

N

5

3

.

1A

86

5

.

24

1

.

98

.

2

12

7

.

5

4A

NA

N

2

I

V

S

w

o

ll

o

F

s

n

o

i

t

c

e

n

n

o

C

)

1

e

l

b

a

T

(

A

87

3

.

28

.

2

15

8

.

1

12

0

.

4

63

3

.

1

24

2

.

5

1

1

Functional Description

Operation Phase Disable Function

The uP9503P supports operation phase disable function to further increase the design flexibility. Platform designer can

choose to disable some phases to meet their design requirement. Both VDD and VDDA rail support operation phase

disable function. The minimum operation phase number is 1+0-phase. In general, to disable a specific phase, pull up

CSNx to VCC5 through 1kΩ resistor and tie CSPx to ground for that phase. The controller detects all the CSNx voltage

at VCC5 power on reset to determine operation phase number.

Note that there is an exception for VDDA rail phase disable function. To let VDDA rail in zero-phase operation, pull up

CSNA to VCC5 through 1kΩ resistor and tied CSPA to ground. Table 4 shows the operation phase number setting.

In addition, the operating phase number is governed by the SVI2 command. The SVI2 command and operating phase

number are shown as Table 3.

Table 3. SVI2 Command and VDD & VDDA Operating Phase Number

L

_

0

I

S

PL

_

1

I

S

Pr

e

b

m

u

N

e

s

a

h

P

D

D

V

t

e

Sr

e

b

m

u

N

e

s

a

h

P

A

D

D

V

t

e

S

11

M

C

C

e

s

a

h

P

ll

u

FM

C

C

e

s

a

h

P

ll

u

F

10

M

C

C

e

s

a

h

P

ll

u

FM

C

C

e

s

a

h

P

ll

u

F

01

M

C

C

e

s

a

h

P

1M

C

C

e

s

a

h

P

1

00

M

S

P

e

s

a

h

P

1M

S

P

e

s

a

h

P

1