
8
INPUT/OUTPUT PORTS AND PIN FUNCTIONS
8-42
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
8.7 Port Peripheral Circuits
Figure 8.7.4 Port Peripheral Circuit Diagram (4)
P70(CLKOUT/WR#/BCLK)
P74(RTDTXD/TXD3/NBDD0)
P76(RTDACK/CTX1/NBDD2)
P82(TXD0/TO26)
P85(TXD1/TO23)
P94(TO17/TXD5/DD15)
P102(TO10/CTX0)
P106(TO14/TXD4/DD1)
P110 - P117(TO0/TO29/DD11
-TO8/TO36/DD4)
P174(TXD2/TO28)
P220(CTX0/HACK#)
P221(CRX0/HREQ#)
P72(HREQ#/TIN27)
P75(RTDRXD/RXD3/NBDD1)
P77(RTDCLK/CRX1/NBDD3)
P135(TIN21/RXD3)
P136(TIN22/CRX1)
P153(TIN3/WAIT#)
Port input data selection
Data bus
Peripheral function input 2 (Note 4)
Peripheral function input 1 (Note 4)
Peripheral function input 2 (Note 4)
Peripheral function input 1 (Note 4)
Peripheral function input 2
Peripheral function input 1
Port input data selection
Direction register
Port output latch
Data bus
Operation mode register
Peripheral function
select register
Input function
enable
(Note 1) (Note 2)
Port input level
switching function
(Standard:
peripheral schmitt)
Operation mode register
Peripheral function
select register
Input function
enable
(Note 1) (Note 3)
Port input level
switching function
(Standard:
peripheral schmitt)
Note 1: For details about the port level switching function, see Section 8.4, "Port Input Level Switching Function."
Note 2: The standard input level of WAIT# is peripheral TTL.
Note 3: There is no standard input level in P70, P82, P85, P94, P102, P106, P110-P117, P174, and P220.
Note 4: "H" level is entered to the peripheral function input when it is set to the general-purpose port inthe operation
mode register.
Notes: The circle denotes a pin.
The symbol
denotes a parasitic diode. Make sure the voltage applied to each pin does not exceed
the VCCE or VCC-BUS voltage.
The input capacitance of each pin is approximately 10 pF.
Operation mode register
Peripheral function
select register
Input function
enable
(Note 1)
Port input level
switching function
(Standard:
peripheral schmitt)
Port input data selection
Direction register
Port output latch