MC68HC912BD32CFU10 FREESCALE [Freescale Semiconductor, Inc], MC68HC912BD32CFU10 Datasheet - Page 219

• Manufacturer Part Number: MC68HC912BD32CFU10
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

PORTSBI
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Byteflight™ Port
SBI Data Register
(PORTSBI
49-sibus
HARDRESET
W
R
PSBI7
BIT 7
U
Figure 53 Port SBI Data Register (PORTSBI)
PSYNEN — Sync Pulse Enable
PUESBI — Pull Up Enable Port SBI
RDRSBI — Reduced Drive Port SBI
PSBI7 – PSBI2 — Port SBI Data Bits
PSBI6
BIT 6
Writing to PSBIx stores the bit value in an internal bit memory. This
value is driven to the respective pin only if DDRSBIx = 1. Only a hard
reset will clear the register.
Reading PSBIx returns
•
•
Reading bits 1 and 0 returns the value of the Tx and Rx pins,
respectively.
Freescale Semiconductor, Inc.
U
For More Information On This Product,
1 = A 50ns pulse is driven on Port SBI2 after the successful
0 = Port SBI2 is a general IO pin.
1 = Pull up enabled for Port SBI.
0 = Pull up disabled for Port SBI.
1 = Reduced drive enabled for Port SBI.
0 = Reduced drive disabled for Port SBI.
the value of the internal bit memory driven to the pin, if DDRSBIx
= 1
the value of the respective pin, if DDRSBIx = 0
reception or transmission of a sync pulse.
PSBI5
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BIT 5
U
Byteflight™ Module
PSBI4
BIT 4
U
PSBI3
BIT 3
U
PSBI2
BIT 2
U
MC68HC912BD32 Rev 1.0
Programmer’s Model
BIT 1
Byteflight™ Module
TX
U
BIT 0
RX
U