MEMORY MAPKS57C2308/P2308/C2316/P2316

PCON — Power Control Register

FB3H

Bit

Identifier

RESET Value

Read/Write

Bit Addressing

.3–.2

3

2

1

0

 

.3

 

.2

.1

.0

 

 

 

 

 

 

 

0

0

0

0

 

W

 

W

W

W

4

4

4

4

 

CPU Operating Mode Control Bits

 

 

0

0 Enable normal CPU operating mode

01 Initiate idle power-down mode

10 Initiate stop power-down mode

.1–.0

CPU Clock Frequency Selection Bits

 

0

0

If SCMOD.0 = "0", fx/64; if SCMOD.0 = "1", fxt/4

 

 

 

 

 

1

0

If SCMOD.0 = "0", fx/8; if SCMOD.0 = "1", fxt/4

 

 

 

 

 

1

1

If SCMOD.0 = "0", fx/4; if SCMOD.0 = "1", fxt/4

 

 

 

 

NOTE: “fx” is the main system clock; “fxt” is the subsystem clock.

4-20

Page 62
Image 62
Samsung KS57C2308 manual Pcon Power Control Register, FB3H, Read/Write Bit Addressing CPU Operating Mode Control Bits