Z86E3016PSG Datasheet, PDF (194/348 Pages) Zilog, Inc. – Z86E3016PSG

Z8 Family of Microcontrollers
User Manual
176
Register F7h
Port 3 Mode Register (P3M)
(Write-Only)
000 0 00 00
0 Port 2 Pull-Ups Open-Drain
1 Port 2 Pull-Ups Active
0 P32 = Input
P35 = Output
1 P32 = DAV0/RDY0 P35 = RDY0/DAV0
00 P33 = Input
P34 = Output
01 P33 = Input
P34 = DM
10 P33 = Input
P34 = DM
11 P33 = DAV1/RDY1 P34 = RDY1/DAV1
0 P31 = Input (T_IN)
P36 = Output (T_OUT)
1 P32 = DAV2/RDY2 P36 = RDY2/DAV2
0 P30 = Input
1 P30 = Serial In
P37 = Output
P37 = Serial Out
0 Parity ON
1 Parity OFF
Figure 115. P3M Register Reset
Serial Peripheral Interface
Select Z8 microcontrollers incorporate a Serial Peripheral Interface (SPI)
for communication with other microcontrollers and peripherals. The SPI
includes features such as Stop-Mode Recovery, Master/Slave selection,
and Compare mode. Table 25 contains the pin configuration for the SPI
feature when it is enabled. The SPI consists of four registers: SPI Control
Register (SCON), SPI Compare Register (SCOMP), SPI Receive/Buffer
Register (RxBUF), and SPI Shift Register. SCON is located in bank (C)
of the Expanded Register File at address 02.
Serial Input/Output
UM001602-0904