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EXTERNAL BUS INTERFACE
17
17-11
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
P7 Operation Mode Register (P7MOD)
<Address: H’0080 0747>
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
8
P70MD
0: P70
R
W
Port P70 operation mode bit
1: CLKOUT/WR#/BCLK (Note 1)
9
P71MD
0: P71
R
W
Port P71 operation mode bit
1: WAIT# (Note 2)
10
P72MD
0: P72
R
W
Port P72 operation mode bit
1: HREQ#/TIN27 (Note 3)
11
P73MD
0: P73
R
W
Port P73 operation mode bit
1: HACK#/TIN26 (Note 3)
12
P74MD
0: P74
R
W
Port P74 operation mode bit (Note 4)
1: RTDTXD/TXD3 (Note 3)
13
P75MD
0: P75
R
W
Port P75 operation mode bit (Note 4)
1: RTDRXD/RXD3 (Note 3)
14
P76MD
0: P76
R
W
Port P76 operation mode bit (Note 4)
1: RTDACK/CTX1 (Note 3)
15
P77MD
0: P77
R
W
Port P77 operation mode bit (Note 4)
1: RTDCLK/CRX1 (Note 3)
Note 1: These functions are selected using the P7 Peripheral Function Select Register and Bus Mode Control Register.
Note 2: During single-chip mode, settings of this register have no effect, and the port functions as port input/output pin.
Note 3: These functions are selected using the P7 Peripheral Function Select Register.
Note 4: If the NBD function is selected by the NBD Pin Control Register, the port functions as NBD pin no matter how this register is set.
b8
9
10
11121314
b15
P70MD
P71MD
P72MD
P73MD
P74MD
P75MD
P76MD
P77MD
000
00000
P7 Peripheral Function Select Register (P7SMOD)
<Address: H’0080 0767>
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
8
P70SMD
0: CLKOUT/WR# (Note 1)
R
W
Port P70 peripheral function select bit
1: BCLK
9
No function assigned. Fix to "0."
00
10
P72SMD
0: HREQ#
R
W
Port P72 peripheral function select bit
1: TIN27
11
P73SMD
0: HACK#
R
W
Port P73 peripheral function select bit
1: TIN26
12
P74SMD (Note 2)
0: RTDTXD
R
W
Port P74 peripheral function select bit
1: TXD3
13
P75SMD (Note 2)
0: RTDRXD
R
W
Port P75 peripheral function select bit
1: RXD3
14
P76SMD (Note 2)
0: RTDACK
R
W
Port P76 peripheral function select bit
1: CTX1
15
P77SMD (Note 2)
0: RTDCLK
R
W
Port P77 peripheral function select bit
1: CRX1
Note 1: Which function of the pin is used depends on how the Bus Mode Control Register is set.
Note 2: If the NBD function is selected by the NBD Pin Control Register, the port functions as NBD pin no matter how this register is set.
Note: The value of this register can only be modified when the corresponding P7 operation mode register bit = 0 (set for port).
Then set the corresponging P7 operation mode register bit to "1."
17.2 External Bus Interface Related Registers
b8
9
10
11121314
b15
P70SMD
P72SMD
P73SMD
P74SMD
P75SMD
P76SMD
P77SMD
000
0000
0