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GPBA01B Datasheet(PDF) 22 Page - Generalplus Technology Inc. |
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GPBA01B Datasheet(HTML) 22 Page - Generalplus Technology Inc. |
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22 / 29 page  GPBA01B © Generalplus Technology Inc. Proprietary & Confidential 22 MAY 28, 2007 Version: 1.1 STA P_00H_BexBank (access memory0 bank 2) ... LDA #%1010-0000 STA P_00H_BexBank ; Select memory1, set bank to 0 (access memory2 bank 3) ... LDA #%1001-1111 STA P_00H_BexBank ; Select memory2, set bank to 31 (access bank 127) ... 11.4. Two BEXs form Daisy-Chain CE1# MA5 MA6 MA3 MA13 MA10 WE# MA1 MA11 MA8 MA15 MA12 MA16 MA2 MA7 MA9 MA14 OE# MA0 MA4 MA0 OE# MA14 MA9 MA7 MA2 MA16 MA12 MA15 MA8 MA11 MA1 MA4 WE# MA10 MA13 MA3 MA5 MA6 CE2# P55 P20 P22 P21 P07 P06 P05 P04 P03 P02 P01 P00 AD1 MA4 MA2 AD6 AD4 AD2 WE# AD3 AD4 MA0 MA8 AD7 MA16 AD1 MC0 AD4 AD0 AD7 AD3 AD5 MA5 COA_CIB AD6 AD2 AD5 AD1 VDD MA6 OE# AD0 AD3 MC1 MA10 AD5 MA15 AD0 AD7 AD2 MPU_CIA MA3 MA9 AD6 MA7 MA1 MA18 P14 VDD P16 P01 P11 P00 P12 P10 P17 P15 P13 CLKO U2 AT29C020 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 31 30 A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 CE A10 OE A11 A9 A8 A13 A14 WE A17 1 2 3 4 5 6 7 8 JP1 (SPLC131/SPLB31...) CI MC1 MC0 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 U1 SPBA01B_PLCC84 17 18 19 20 21 22 23 24 25 26 27 69 68 67 66 65 64 63 62 61 60 59 P01 P00 VDD P17 P16 P15 P14 P13 P12 P11 P10 P22 P21 P20 P55(WE#) OSCO(OE#) CI CO CLKO DVP XO XI U2 AT29C020 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 31 30 A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 CE A10 OE A11 A9 A8 A13 A14 WE A17 C2 20p C1 20p U1 SPBA01B_PLCC84 17 18 19 20 21 22 23 24 25 26 27 69 68 67 66 65 64 63 62 61 60 59 P01 P00 VDD P17 P16 P15 P14 P13 P12 P11 P10 P22 P21 P20 P55(WE#) OSCO(OE#) CI CO CLKO DVP XO XI Q1 1.84MHz BEXA is memory extender, BEXB is IO extender and clock divider MPU KEY MATRIX BEXA BEXB BEXA CFG=7; BEXB CFG=0 (1.84MHz/(m*n*2) %PullBEXENLow ; Set CI to 0 %PullBEXENHigh ; Set CI to 1 LDA #1 STA P_0DH_BexVolID ; Set BEXA Volume-ID to 1, BEXA Select-ID=1 LDA #3 STA P_0DH_BexVolID ; Set BEXB Volume-ID to 3 ; BEXA VID=1, SID=3(inactive) ; BEXB VID=3, SID=3(active) LDA #%00011111 STA P_23H_BEXConfig ; Set CFG=0 ; BEXB act as IO extender, all port are output LDA #%10101010 ; BEXB: P0=AAH (SPLC131/GPLB31…) GPBA01B_PLCC84 GPBA01B_PLCC84 |
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