15
15-7
EXTERNAL BUS INTERFACE
32180 Group User’s Manual (Rev.1.0)
15.2 External Bus Interface Related Registers
P7 Operation Mode Register (P7MOD)
<Address: H
’0080 0747>9 1011121314b15b8
P75MD P76MD P77MDP70MD P71MD P72MD P73MD P74MD
00000000
<After reset: H’00>
b Bit Name Function R W
8 P70MD 0: P70 R W
Port P70 operation mode bit 1: BCLK/WR#
9 P71MD 0: P71 R W
Port P71 operation mode bit 1: WAIT#
10 P72MD 0: P72 R W
Port P72 operation mode bit 1: HREQ#
11 P73MD 0: P73 R W
Port P73 operation mode bit 1: HACK#
12 P74MD 0: P74 R W
Port P74 operation mode bit 1: RTDTXD
13 P75MD 0: P75 R W
Port P75 operation mode bit 1: RTDRXD
14 P76MD 0: P76 R W
Port P76 operation mode bit 1: RTDACK
15 P77MD 0: P77 R W
Port P77 operation mode bit 1: RTDCLK
P22 Operation Mode Register (P22MOD)
<Address: H
’0080 0756>123456b7b0
P220MD P222MD P223MD P224MD P225MD P226MD P227MD
0 000000
<After reset: H’00>
b Bit Name Function R W
0 P220MD 0: P220 R W
Port P220 operation mode bit 1: CTX0
1 No function assigned. Fix to "0". 00
2 P222MD 0: P222 R W
Port P222 operation mode bit 1: CTX1
3 P223MD 0: P223 R W
Port P223 operation mode bit 1: CRX1
4 P224MD 0: P224 R W
Port P224 operation mode bit (Note 1) 1: A11/CS2# (Note 2)
5 P225MD 0: P225 R W
Port P225 operation mode bit (Note 1) 1: A12/CS3# (Note 2)
6 ternal Bus IP226MD 0: P226 R W
Port P226 operation mode bit (Note 1) 1: CS2#
7 P227MD 0: P227 R W
Port P227 operation mode bit (Note 1) 1: CS3#
Note 1: Port P224–P227 operation modes are effective only when the CPU is operating in external extension mode.
Note 2: Either of the functions is selected using the P22 Peripheral Output Select Register.
Note: • P221 is a CAN input-only pin.
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