NEC VR4181 mPD30181, Руководство пользователя

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CHAPTER 13 GENERAL PURPOSE I/O UNIT (GIU)
User’s Manual U14272EJ3V0UM
250
13.3.3 GPMD2REG (0x0B00 0304)
(1/2)
Bit 15 14 13 12 11 10 9 8
Name GP23MD1 GP23MD0 GP22MD1 GP22MD0 GP21MD1 GP21MD0 GP20MD1 GP20MD0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
RTCRST 0 0 0 0 0 0 0 0
Other resets
Note Note Note Note Note Note Note Note
Bit 7 6 5 4 3 2 1 0
Name GP19MD1 GP19MD0 GP18MD1 GP18MD0 GP17MD1 GP17MD0 GP16MD1 GP16MD0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
RTCRST 0 0 0 0 0 0 0 0
Other resets Note Note Note Note Note Note Note Note
Bit Name Function
15, 14 GP23MD(1:0) These bits control direction and function of the GPIO23 pin as follows:
00 : General-purpose input
01 : RFU
10 : General-purpose output
11 : ROMCS1# output
13, 12 GP22MD(1:0) These bits control direction and function of the GPIO22 pin as follows:
00 : General-purpose input
01 : RFU
10 : General-purpose output
11 : ROMCS0# output
11, 10 GP21MD(1:0) These bits control direction and function of the GPIO21 pin as follows:
00 : General-purpose input
01 : RFU
10 : General-purpose output
11 : RESET# output
9, 8 GP20MD(1:0) These bits control direction and function of the GPIO20 pin as follows:
00 : General-purpose input
01 : RFU
10 : LCD M output
11 : UBE# output
7, 6 GP19MD(1:0) These bits control direction and function of the GPIO19 pin as follows:
00 : General-purpose input
01 : IOCS16# input
10 : General-purpose output
11 : RFU
Note Holds the value before reset
Caution LCD M output can not be used in the V
R
4181 of Rev.1.0.