ST92196A STMicroelectronics, ST92196A Datasheet - Page 106

• Manufacturer Part Number: ST92196A
• Description: 8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
• Manufacturer: STMicroelectronics

MULTIFUNCTION TIMER (Cont’d)
OUTPUT B CONTROL REGISTER (OBCR)
R253 - Read/Write
Register Page: 10
Reset value: 0000 0000 (00h)
Bits 7:6 = C0E[0:1]: COMP0 Action Bits .
These bits are set and cleared by software. They
configure the type of action to be performed on the
TxOUTB output pin when successful compare of
the CMP0R register occurs. Refer to
the list of actions that can be configured.
Bits 5:4 = C0E[0:1]: COMP1 Action Bits .
These bits are set and cleared by software. They
configure the type of action to be performed on the
TxOUTB output pin when a successful compare of
the CMP1R register occurs. Refer to
the list of actions that can be configured.
Bits 3:2 = OUE[0:1]: OVF/UNF Action Bits .
These bits are set and cleared by software.They
configure the type of action to be performed on the
TxOUTB output pin when an Overflow or Under-
flow on the U/D counter occurs. Refer to
for the list of actions that can be configured.
C0E0 C0E1 C1E0 C1E1 OUE0 OUE1 OEV 0P
7
Table 23
Table 23
Table 23
0
for
for
Table 23. Output B Action Bits
Notes:
– xx stands for C0, C1 or OU.
– Whenever more than one event occurs simulta-
Bit 1 = OEV: On-Chip event on OVF/UNF .
This bit is set and cleared by software.
0: No action
1: An underflow/overflow activates the on-chip
Bit 0 = OP: TxOUTB preset value .
This bit is set and cleared by software and by hard-
ware. The value of this bit is the preset value of the
TxOUTB pin. Reading this bit returns the current
state of the TxOUTB pin (useful when it is selected
in toggle mode).
xxE0
0
0
1
1
neously, Action Bit 0 will be the result of ANDing
Action Bit 0 of all simultaneous events and Action
Bit 1 will be the result of ANDing Action Bit 1 of
all simultaneous events.
event signal (a single pulse is generated)
xxE1
0
1
0
1
- MULTIFUNCTION TIMER (MFT)
Action on the TxOUTB pin when an
xx event occurs
Set
Toggle
Reset
NOP
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