W83194BR-903_06 Datasheet, PDF (11/26 Pages) Winbond – STEPLESS VIA PT/PM MAIN CLOCK GENERATOR

W83194BR-903/W83194BG-903
7. I²C CONTROL AND STATUS REGISTERS
7.1 Register 0: Frequency Select (Default = 10h)
BIT
NAME
7 SSEL [4]
PWD
DESCRIPTION
0 Frequency selection by software via I²C
6 SSEL [3]
0
5 SSEL [2]
0
4 SSEL [1]
1
3 SSEL [0]
0
2 EN_SSEL
0 Enable software program FS [4:0].
0 = Select frequency by hardware.
1= Select frequency by software I²C - Bit 7~ 3.
1 EN_SPSP
0 ^{Enable Spread Spectrum in the frequency table.}
0 = Normal
1 = Spread Spectrum Enabled
0 EN_SAFE_FREQ ₀ Enable reload safe frequency when the watchdog is timeout.
0 = reload the FS [4:0] latched pins when watchdog time out.
1 = reload the safe frequency bit defined at Register 5 bit 4~0.
7.2 Register 1: CPU Clock (1 = Enable, 0 = Stopped) (Default: E2h)
BIT
PIN NO PWD
DESCRIPTION
7
45,44
1 CPUT_IPT/CPUC_IPT output control.
6
42,41
1 CPUT1 / C1 output control.
5
39,38
1 CPUT0 / C0 output control.
4
-
X Power on latched value of FS4 pin. Default: 0 (Read only)
3
-
X Power on latched value of FS3 pin. Default: 0 (Read only)
2
-
X Power on latched value of FS2 pin. Default: 0 (Read only)
1
-
X Power on latched value of FS1 pin. Default: 1 (Read only)
0
-
X Power on latched value of FS0 pin. Default: 0 (Read only)
Publication Release Date: May 2006
-7-
Revision 1.0