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HFA3842B Datasheet(PDF) 3 Page - Intersil Corporation |
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HFA3842B Datasheet(HTML) 3 Page - Intersil Corporation |
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3 / 26 page  3 HFA3842B Pin Descriptions HOST INTERFACE PINS PIN NAME PIN NUMBER PIN I/O TYPE DESCRIPTION HA0-9 106-113, 117, 118 5V Tol, CMOS, Input, 50K Pull Down PC Card Address Input, Bits 0 to 9 HCE1- 1 5V Tol, CMOS, Input, 50K Pull Up PC Card Select, Low Byte HCE2- 122 5V Tol, CMOS, Input, 50K Pull Up PC Card Select, High Byte HD0-15 101-99, 6-2, 96-94, 128-125, 123 5V Tol, BiDir, 2mA, 50K Pull Down PC Card Data Bus, Bit 0 to 15 HINPACK- 103 CMOS Output, 2mA PC Card I/O Decode Confirmation HIORD- 120 5V Tol, CMOS, Input, 50K Pull Up PC Card I/O Space Read HIOWR- 119 5V Tol, CMOS, Input, 50K Pull Up PC Card I/O Space Write HRDY/HIREQ- 114 CMOS Output, 4mA PC Card interrupt Request (I/O Mode) Card Ready (Memory Mode) HOE- 121 5V Tol, CMOS, Input, 50K Pull Up PC Card Memory Attribute Space Output Enable HREG- 102 5V Tol, CMOS, Input, 50K Pull Up PC Card Attribute Space Select HRESET 16 5V Tol, CMOS, ST Input, 50K Pull Up Hardware Reset HSTSCHG- 36 CMOS Output, 4mA PC Card Status Change HWAIT- 104 CMOS Output, 4mA PC Card Not Ready (Force Host Wait State) HWE- 116 5V Tol, CMOS Input, 50K Pull Up PC Card Memory Attribute Space Write Enable USB+ 12 CMOS BiDir, 2mA, (Also USB Transceiver) USB, MBUS Address Bit 20, or I/O as PL5 USB- 11 CMOS BiDir, 2mA, (Also USB Transceiver) USB, MBUS Address Bit 21, or I/O or I/O as PL6 USB ATTACHED 105 Input, 5V Tolerant, Pull-Down Sense USB VBUS to Indicate Cable Attachment TABLE 1. MEMORY INTERFACE PINS PIN NAME PIN NUMBER PIN I/O TYPE DESCRIPTION MUBE- / MA0 / MWEH- 72 CMOS TS Output, 2mA MBUS Upper Byte Enable for x16 Memory; MBUS Address Bit 0 (byte) for x8 Memory; High Byte Write Enable for 2 x8 Memories MA1-18 73-81, 84-92 CMOS TS Output, 2mA MBUS Address Bits 1 to 18 PL4 43 CMOS BiDir, 2mA MBUS Address Bit 19 PL5 12 CMOS BiDir, 2mA, 50K Pull Up MBUS Address Bit 20 (See Note 1) PL6 11 CMOS BiDir, 2mA MBUS Address Bit 21 (See Note 1) MLBE- 62 CMOS TS Output, 2mA, 50K Pull Up MBUS Lower Byte Enable, or I/O as PM2 MOE- 70 CMOS TS Output, 2mA Memory Output Enable MWE- / MWEL- 71 CMOS TS Output, 2mA Low (or only) Byte Memory Write Enable RAMCS- 69 CMOS TS Output, 2mA RAM Select NVCS- 68 CMOS TS Output, 2mA NV Memory Select MD0-7 61-54 5V Tol, CMOS, BiDir, 2mA, 100K Pull Up MBUS Low Data Byte, Bits 0 to 7 MD8-15 51-44 5V Tol, CMOS, BiDir, 2mA 50K Pull Down MBUS High Data Byte, Bits 8 to 15 NOTE: 1. Not available if USB interface is used. TABLE 2. GENERAL PURPOSE AND EEPROM PORT PINS PIN NAME PIN NUMBER PIN I/O TYPE DESCRIPTION OF FUNCTION (IF OTHER THAN IO PORT) GENERAL PURPOSE PORT PINS TXD 17 CMOS BiDir, 2mA, 50K Pull Down Transmit Data Out TXC 18 CMOS BiDir, 2mA Transmit Clock In/Out RXD 19 CMOS Input Receive Data In RXC 20 CMOS Input Receive Clock In HFA3842B |
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