Toshiba H1 Series Data Book page 131

3.7.6 Port 8 (P80 to P87)
Port 80 to 87 are 8-bit output ports. Resetting sets output latch of P82 to "0" and output
latches of P80 to P81, P83 to P87 to "1". But if it is started at boot mode (AM [1:0]= "11"),
output latch of P82 is set to "1".
Port 8 also function as interface-pin for external memory.
Writing "1" in the corresponding bit of P8FC, P8FC2 enables the respective functions.
Resetting resets P8FC to "0" and P8FC2 to "0", sets all bits to output ports.
Reset
Function
control2
P8FC2 write
Function
control
P8FC write
Output latch
Selector
P8 write
,
CS 0 SDCS
P8 read
"1", SDCS , CSZA , CSXA ,"1", "1", "1", "1"
CS , CS , CS ,
0 1
Figure 3.7.12 Port 8
92CZ26A-128
P80 (
P81 (
S
P82 (
P83 (
P84 ( CSZB )
P85 ( CSZC )
P86 ( CSZD ,
P87 ( CSXB ,
, , , ,
SDCS CSXA CSZB CSZC
CS , CSZB , CSZC , CSZD , CSXB
2 3
TMP92CZ26A
CS )
0
CS , SDCS )
1
CS , CSZA , SDCS )
2
CS , CSXA )
3
)
ND 0 CE
)
ND 1 CE
, ,
ND 0 CE ND 1 CE