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| VT83C469 pcmcia socket controller data sheet (preliminary) date : march 13, 1995 via technologies, inc.
via technologies, inc. preliminary VT83C469 2 via VT83C469 pcmcia s ocket c ontroller d ate : m arch 13, 1995 o verview the via VT83C469 is a highly integrated pc card socket controller chip that implements the pcmcia 2.0/jeida 4.1 specifications. the chip is register compatible with the intel 82365sl and supports two pc card sockets with a fully buffered pcmcia interface. no external buffer is required between the isa bus and pcmcia bus. for systems requiring more than two sockets, the VT83C469 can be cascaded to support up to eight sockets without external logic. under eeprom io resource data, the VT83C469 can support unlimited sockets under isa plug and play mode in addition, the VT83C469 offers a jumperless configuration mechanism which allows the system manufacturer to set up a configuration (config.sys) driver for pc card setup. f eatures single chip pcmcia controller between isa bus and pcmcia bus full exca implementation of two pcmcia 2.0/jeida 4.1 pc card sockets register-compatible with intel 82365sl supports memory cards, i/o cards and dma cards supports pcmcia-ata disk interface 8 or 16-bit cpu interface 8 or 16-bit pcmcia interface support high integration without any external logic or buffers five mappable memory windows and two i/o windows for each socket pin to pin compatibility with vadem vg-468 208 pqfp/two sockets support plug and play isa specifications version 1.0 with eeprom ? supports dynamic relocation of address space to avoid conflicts with system resources. ? supports multiple pcmcia controllers ? features easy interface and design for docking stations mixed voltage operation ? support 3.3v or 5v pcmcia socket interface support pc card dma operation dual configuration for drive bay: socket controller can be located either on motherboard/isa plug-in board or in the drive bay housing support up to 8 sockets without external decoding via technologies, inc. preliminary VT83C469 3 a rchitectural o verview the VT83C469 functional blocks include the pcmcia/jeida pc card socket interface, isa interface, memory and i/o window mapping, socket power management, interrupt steering, configuration registers and ata mode operation. pcmcia/jeida pc card socket interface the pcmcia/jeida interface consists of 60 signals and 8 power connections that interfaces to pc cards through a 68 pin socket. a single VT83C469 can be configured to support either one or two sockets. up to eight pc card sockets may be supported by cascading VT83C469 chips. this chip supports memory, i/o and ata card interchangeably. isa interface the VT83C469 interfaces directly to the isa bus. no external buffers or transceivers are needed. for systems based on the 386sl, this chip provides the special signals intr, rio#, pwrgood, hdreq, hdack#, htc, dreq#, dack, tc#, hbufdir, lbufdir, d7bufdir, a_5vdect and b_5vdect. memory and i/o window mapping multiple pc cards in a system could conflict if they try to utilize the same system memory and i/o space. the VT83C469 allows the drivers to map a memory card into up to five separate windows and an i/o card into two separate windows, thus avoiding system configuration conflicts. the VT83C469 provides memory paging, memory address mapping for pc card attribute and common memory, and i/o address mapping. the VT83C469 includes registers which provide access to the card information structure and card configuration registers within pc card's attribute memory (as described by the pcmcia/jeida pc card standard). power management for socket side and core at power on, if there is no card plugged into any socket, power to the socket is turned off. when a card is inserted, one of two events occur. if the chip has been set for automatic power on, then the VT83C469 automatically enables the power to socket. if the VT83C469 has been configured to cause management interrupts for card detection events, a management interrupt is generated to inform driver of the fact that a card was installed. software driver can then initialize the card, or in the case of manual power detection, power the socket up manually and then initialize it. when a card is removed from a socket, and if the VT83C469 has been configured for automatic power on, the VT83C469 automatically disables vcc and vpp supplies to the socket. interrupt steering the VT83C469 steers the interrupt from the pc card to one of ten system interrupts. multiple pc cards in a system can conflict if they try to utilize the same interrupt level. the VT83C469 can be programmed to eliminate this conflict by steering each pc card interrupt request to a different system interrupt. configuration registers the VT83C469 provides a register containing interface identity and version information for each socket. ata mode operation the VT83C469 supports direct connection to at attached interface hard drives. ata drives use an interface that is very similar to the ide interface found on many popular portable computers. in this mode, the address and data conflict with the floppy drive is handled automatically. via technologies, inc. preliminary VT83C469 4 chip mode selection and power-on strapping the VT83C469 can be set to four different modes: pcmcia b socket bus mode, isa bus mode, normal mode and plug and play mode. in the normal mode (under vg-468 pin definition), no advanced features of the VT83C469 such as plug and play, dma and 3.3/5v sockets power supports are available. the isa bus mode and the pcmcia b socket mode allows for add-on applications to control the data buffer's (ie. 74245) direction control. the plug and play mode changes these pins to eeprom for plug and play resource data support. mode configuration hdack# ( pin 67) htc ( pin 68) m ode pull up pull up normal mode pull up pull down isa bus buffer mode pull down pull up pcmcia bus buffer mode pull down pull down pnp mode buffered bus direction support and pnp mode p ins pcmcia b socket bus mode isa bus mode n ormal m ode (vg-468 mode ) p n p mode 136 shbufdir hhbufdir irq15 e2cs 152 slbufdir hlbufdir intr# e2sk 153 --- d7bufdir spkrout e2dio note: shbufdir socket data high byte direction slbufdir socket data low byte direction hhbufdir isa data high byte direction hlbufdir isa data high byte direction pc card interface i/o register addressing the VT83C469 registers are accessed thro ugh an 8-bit indexing mechanism. two i/o addresses are used to access the VT83C469 registers. the first i/o address is the index register, which is fixed at 3e0h or 3e2h. the second i/o address is the data register, which is fixed at 3e1h or 3e3h. during pnp mode, the contents of the eeprom resource data will determine whether the io base will be set by the pnp bios or pnp utility. each VT83C469 contains a block of 64 indirectly access registers. the starting base of the index register values in each VT83C469 is selected by pull-up/pull-down strapping resistor on intr# and spkrout# pin, according to the table below. while resetdrv is true, this pin is used for input. the falling edge of resetdrv latches the pull up or down state of this pin, and thereafter this pin is used for normal operation. the VT83C469 will not respond to a data register read or write operation or to an index register read operation unless the index register has first been written to with a valid index. intr# spkrout# r esistor b ase i ndex d ata pull up pull up 00h 3e0h 3e1h pull up pull down 80h 3e0h 3e1h pull down pull up 00h 3e2h 3e3h pull down pull down 80h 3e2h 3e3h via technologies, inc. preliminary VT83C469 5 memory and i/o mapping the VT83C469 provides logic to map portions of the 64mb common memory and/or 64mb attribute memory spaces on the pc card into the smaller 16mb (isa) system address space. the VT83C469 mapping function provides extension of the system address space up to the full 64mb pc card capability. start and stop addresses are specified with isa address bits 23 through 12. this sets the minimum size of a memory window into 4kb. memory windows are specified in the isa address from 64k to 16mb. note that no memory window can be mapped in the first 64k of the isa address space. only i/o address windows are allowed to be mapped between 0 and 64kb in the isa address space. pc card memory is accessed only when all of the following conditions are satisfied: 1. the system memory address mapping window is enabled. 2. the system memory address is greater than or equal to the system memory address mapping start register a23:a12. 3. the system memory address is less than or equal to the system memory address mapping stop register a23:a12.. an i/o pc card is accessed when the following conditions are satisfied: 1. the i/o address window is enabled. 2. the system address is greater than or equal to the i/o address start register a15:a0. 3. the system address is less than or equal to the i/o address stop register a15:a0 4. the access is not a dma transfer. aen = 0 to access the i/o pc card. mixed voltage operation the VT83C469 has three power planes: the isa bus interface, socket a interface and socket b interface. the isa bus power planes connect to the core power plane and supports 5v operation. socket a and socket b power planes each can be independently connected to 3v or 5v. the two voltage detect pins are: a_5vdect and b_5vdect. p ins VT83C469 p in d efinition vg-468 p in d efinition 191 a_5vdet vcc 141 b_5vdet vcc 27 a_3ven gnd 101 b_3ven gnd in a mixed voltage implementation, the socket will not be powered unless there is a card in the socket. after the card is inserted, the system reads the voltage sensor pins and allows the cis to determine the voltage to be applied to the card. then it writes to the power control register, bit 4, which enables the outputs to the voltage switch. via technologies, inc. preliminary VT83C469 6 plug and play the VT83C469 supports the plug and play 1.0 specifications which provides automatic configuration capability. this feature allows the plug and play bios or operating system (i.e. windows 95) to relocate the VT83C469 register from the default to 3e0h/3e1h, 3e2h/3e3h or any other i/o address from the eeprom containing the i/o resource. when plug and play is enabled, the drive bay buffer mode cannot be enabled and the intr# output cannot be used. in order to enable plug and play mode, the following register strapping must be used: pull down hdack# and pull down htc. three 8 bit ports are used by the software to access the plug and play configuration space. the ports are listed in the following table: p ort n ame l ocation l ocation address 279h write only write_data a79h write only read_data 200h ~ 3ffh read only auto configuration registers pnp register set add std description def type 0x00 x set read_data port 0x00 w 0x01 x serial isolation 0x00 r 0x02 x configure control 0x00 w 0x03 x wake csn 0x00 w 0x04 x resource data 0x00 r/w 0x05 x status 0x00 r 0x06 x card select number 0x00 r/w 0x07 x logical device number 0x00 r 0x30 x actives 0x00 w 0x31 x i/o range check 0x00 r/w 0x60 x i/o base address 0 [15:8] 0x00 r/w 0x61 x i/o base address 0 [7:0] 0x00 r/w pc card dma operations the VT83C469 supports the use of a pc card as an interface with a dma device. the VT83C469 defines an extension to the i/o card definition that allows isa compatible dma operation, including the terminal count signal required by the standard isa floppy disk controller. only one socket at a time should be enabled for dma transfer because the isa bus dma handshake is shared between both socket interfaces. note: the original vg-468 pins 67 and 68 are defined as gpio. the VT83C469 defines these pins as hdack# and htc. via technologies, inc. preliminary VT83C469 7 the pcmcia interface signals are redefined as the dma interface signals according to the following table: dma m ode s ocket s ide s ignal p in d efault p in f unction a lternate p in f unction 61,132 iois16# dreq# 54,125 spkr# dreq# 49,120 inpack# dreq# 1,72 reg# dack 16,87 oe# tc# 30,100 we# tc# via technologies, inc. preliminary VT83C469 8 register set the following is a list of VT83C469 registers and their offset values. the general registers, interrupt registers, i/o registers and memory registers are fully compatible with the intel 82365sl. the other registers are unique to the VT83C469. s ocket a offset s ocket b offset r egister n ame 00h 40h identification and revision 01h 41h interface status 02h 42h power control 03h 43h interrupt and general control 04h 44h card status change 05h 45h card status change interrupt configuration 06h 46h address window enable 07h 47h i/o control 08h 48h i/o address 0 start low byte 09h 49h i/o address 0 start high byte 0ah 4ah i/o address 0 stop low byte 0bh 4bh i/o address 0 stop high byte 0ch 4ch i/o address 1 start low byte 0dh 4dh i/o address 1 start high byte 0eh 4eh i/o address 1 stop low byte 0fh 4fh i/o address 1 stop high byte 10h 50h system memory address 0 mapping start low byte 11h 51h system memory address 0 mapping start high byte 12h 52h system memory address 0 mapping stop low byte 13h 53h system memory address 0 mapping stop high byte 14h 54h card memory offset address 0 low byte 15h 55h card memory offset address 0 high byte 16h 56h misc control 1 17h 57h reserved 18h 58h system memory address 1 mapping start low byte 19h 59h system memory address 1 mapping start high byte 1ah 5ah system memory address 1 mapping stop low byte 1bh 5bh system memory address 1 mapping stop high byte 1ch 5ch card memory offset address 1 low byte 1dh 5dh card memory offset address 1 high byte 1eh 5eh misc control 2 1fh 5fh chip information 20h 60h system memory address 2 mapping start low byte 21h 61h system memory address 2 mapping start high byte 22h 62h system memory address 2 mapping stop low byte 23h 63h system memory address 2 mapping stop high byte 24h 64h card memory offset address 2 low byte 25h 65h card memory offset address 2 high byte 26h 66h ata mode control 27h 67h reserved 28h 68h system memory address 3 mapping start low byte 29h 69h system memory address 3 mapping start high byte via technologies, inc. preliminary VT83C469 9 s ocket a offset s ocket b offset r egister n ame 2ah 6ah system memory address 3 mapping stop low byte 2bh 6bh system memory address 3 mapping stop high byte 2ch 6ch card memory offset address 3 low byte 2dh 6dh card memory offset address 3 high byte 2eh 6eh via id 2fh 6fh dma control 30h 70h system memory address 4 mapping start low byte 31h 71h system memory address 4 mapping start high byte 32h 72h system memory address 4 mapping stop low byte 33h 73h system memory address 4 mapping stop high byte 34h 74h card memory offset address 4 low byte 35h 75h card memory offset address 4 high byte 36h 76h reserved 37h 77h reserved 38h 78h reserved 39h 79h reserved 3ah 7ah reserved 3bh 7bh reserved 3ch 7ch reserved 3dh 7dh reserved 3eh 7eh reserved 3fh 7fh reserved c hip c ontrol r egisters identification and revision register ( read only ) address : index ( base + 00h ) b it f unction d[7:6] VT83C469 interface type type of pc card supported by the socket. these bits do not identify the type of card that is present at the socket. 00: i/o only. 01: memory only. 10: memory & i/o. 11: reserved. d[5:4] reserved. these bits will be read back as zero. d[3:0] these four bits indicate the revision of the chip. 0010 is compatible with intel. via technologies, inc. preliminary VT83C469 10 interface status register ( read only ) address : index ( base + 01h ) b it f unction d7 reserved d6 pc card power active 0: power to the socket is off ( vcc and vpp1 are no connection). 1: power to the socket is on ( vcc is set according to bit 1 in miscellaneous control 1 register and det_5 pin, vpp1 is set according to bit 1:0 in the power control register). d5 ready/busy# 0: pc card is busy. 1: pc card is ready. d4 memory write protect. bit value is the logic level of the wp signal on the memory pc card interface. 0: pc card is not write protected. 1: pc card is write protected. d3 card detect 2 together with card detect 1 indicates a card is present at the socket and fully seated. 0: cd2# signal on the pc card interface is inactive. 1: cd2# signal on the pc cars interface is active. d2 card detect 1 together with card detect 2 indicates a card is present at the socket and fully seated. 0: cd1# signal on the pc card interface is inactive. 1: cd1# signal on the pc cars interface is active. d[1:0] battery voltage detect 2 and 1. bvd1 bvd2 status 0 0 battery dead 0 1 battery dead 1 0 warning 1 1 battery good for i/o pc cards, bit 0 indicates the current status of the (stschg/ri#) signal from the pc card when the ring indicate enable bit in the interrupt and general control register is set to 0. via technologies, inc. preliminary VT83C469 11 power control register ( read/write ) address : index ( base + 02h ) b it f unction d7 output enable. if this bit set to zero, the pc card outputs listed below are tri-stated. cadr<25:0>, d<15:0>, ce2#, ce1#, iord#, iowr#, oe#, we#, reg#, reset. this bit should not be set until after this register has been written setting pc card power enable previously. d6 reserved. d5 auto power switch enable. 0: automatic socket power switching based on card detects is disable. 1: automatic socket power switching based on card detects is enable. d4 pc card power enable. 0: power to the socket is disabled. (vcc and vpp1 are all no connection) 1: power to the socket is enabled. (vcc is set according to bit 1 in miscellaneous control 1 register and det_5 pin, and vpp1 is set according to bit 1:0 in this register) d[3:2] reserved d[1:0] vpp1 power control 00: no connection. 01: vcc. 10: 12v. 11: reserved.(this setting then vpp1 will be a no connection) the following table describes the slot power control function. o utput pc c ard p ower e nable a uto p ower s witch e nable cd1# cd2# t ri - state o utputs pc c ard p ower a ctive x0xxxoff0 01000off1 11000on1 x10x1off1 x101xoff1 01100off1 11100on1 x11x1off0 x111xoff0 via technologies, inc. preliminary VT83C469 12 interrupt register ( read/write ) address : index ( base + 03h ) b it f unction d7 ring indicate enable. 0: for i/o pc card, the stschg/ri# signal from card is used as the status change signal stschg#. the current status of this signal is then available to be read from the interrupt status register and this signal can be configured as a source for the card status change interrupt. 1: for i/o pc card, the stschg/ri# signal from card is used as ring indicator signal and is passed through to the irq15(multi pin, set misc control 2 bit 7 to one is used as ri_out#). the ring indicate enable bit has no function when the pc card type bit is set to zero ( memory card). d6 pc card reset this is a software reset to pc card. 0: activates the reset to the pc card. the reset signal will be active until bit is set to one. 1: deactivates the reset signal to the pc card. d5 pc card type. 0: memory pc card. 1: i/o pc card. d4 intr# enable. 0: the intr# does not indicate a card status change interrupt is steered to one of the irqs lines according to bit 7:4 in the card status change interrupt configuration register. 1: enable the card status change interrupt on the intr# signal. d[3:0] irq level selection ( i/o cards only ). refer to following table is the redirection of the pc card interrupt according to these bits. irq bit 3 irq bit 2 irq bit 1 irq bit 0 i nterrupt r equest l evel 0 0 0 0 irq not select 0001 reserved 0010 reserved 0 0 1 1 irq3 enable 0 1 0 0 irq4 enable 0 1 0 1 irq5 enable 0110 reserved 0 1 1 1 irq7 enable 1000 reserved 1 0 0 1 irq9 enable 1 0 1 0 irq10 enable 1 0 1 1 irq11 enable 1 1 0 0 irq12 enable 1101 reserved 1 1 1 0 irq14 enable 1 1 1 1 irq15 enable via technologies, inc. preliminary VT83C469 13 card status change register ( read only ) address : index ( base + 04h ) b it f unction d[7:4] r. 0000 d3 card detect change. 0: no change detected on either cd2# or cd1#. 1: a change has been detected on cd2# and cd1#. d2 ready change. 0: no change on rdy/bsy#, or i/o pc card installed. 1: when a low to high has been detected on the rdy/bsy# signal indicating that the memory pc card is ready to accept a new data transfer. d1 battery warning. 0: no battery warning condition, or i/o pc card installed. 1: a battery warning condition has been detected. d0 battery dead ( stschg# ) for memory pc cards, bit is set one when a battery dead condition has been detected. for i/o pc cards, bit is set to one if ring indicate enable bit in the interrupt and general control register is set to zero and the stschg/ri# signal from the i/o pc card has been pulled low. the system software then has to read the status change register in the pc card to determine the cause of the status change signal stschg#. this bit reads zero for i/o pc cards if the ring indicate enable bit in the interrupt and general control register is set to one. note : the card status change register contains the status for sources of the card status change interrupt. these sources can be enabled to generate a card status change interrupt by setting the corresponding bit in the card status change interrupt configuration register. reading the card status change register causes the register bits to be reset to zero. if the card status change interrupt is enabled to one of the system bus interrupt request lines, the corresponding irq signal remains active high until this register is read. via technologies, inc. preliminary VT83C469 14 card status change interrupt configuration register ( read/write ) address : index ( base + 05h ) b it f unction d[7:4] interrupt steering for the card status change interrupt. these bits select the redirection of the card status change interrupt if the interrupt is not select to the output on the intr# pin. d3 card detect enable. 0: disables the generation of a card status change interrupt when the card detect signals changed. 1: enables a card status change interrupt when a change has been detected on cd2# or cd1#. d2 ready enable ( memory card only ). 0: disables the generation of a card status change interrupt when a low to high transition has been detected on the rdy/bsy# signal. 1: enables a card status change interrupt when a low to high transition has been detected on the rdy/bsy# pin. d1 battery warning enable ( memory card only ). 0: disables the generation of a card status change interrupt when a battery warning condition has been detected. 1: enables a card status change interrupt when a battery warning condition has been detected. d0 battery dead enable ( stschg# ). 0: disables the generation of a card status change interrupt when a battery dead condition has been detected. ( memory pc cards used ). for i/o pc cards, bit is ignored when a ring indicate enable bit is set one. 1: for memory pc cards, enables a card status change interrupt when a battery dead condition has been detected. for i/o pc cards, enables the VT83C469 to generate a card status change interrupt if the stschg# signal has been pulled low by the i/o pc card, assuming that the ring indicate enable bit is set zero. intr e nable irq bit 3 irq bit 2 irq bit 1 irq bit 0 i nterrupt r equest l evel 0 0 0 0 0 irq not select 0 0 0 0 1 reserved 0 0 0 1 0 reserved 0 0 0 1 1 irq3 enable 0 0 1 0 0 irq4 enable 0 0 1 0 1 irq5 enable 0 0 1 1 0 reserved 0 0 1 1 1 irq7 enable 0 1 0 0 0 reserved 0 1 0 0 1 irq9 enable 0 1 0 1 0 irq10 enable 0 1 0 1 1 irq11 enable 0 1 1 0 0 irq12 enable 0 1 1 0 1 reserved 0 1 1 1 0 irq14 enable 0 1 1 1 1 irq15 enable 1 x x x x card status change interrupt on intr# address window enable register ( read/write ) via technologies, inc. preliminary VT83C469 15 address : index ( base + 06h ) b it f unction d[7:6] i/o window enable [1:0]. 0: inhibit the card enable signals to the pc card when an i/o access occurs within the corresponding i/o address window. 1: generate the card enable signals to pc card when an i/o access occurs within the corresponding i/o address window. i/o accesses pass addresses from the system bus directly through to the pc card. the start and stop register pairs must all be set to the desired window values before setting this bit to one. d5 ms16# decode a23:12. 0: generated ms16# from a decode of the system address lines a23:17 only. this means that a minimum, a 128k block of system memory address space is set aside as 16-bit memory only. 1: generated ms16# from a decode of the system address lines a23:12. d4 memory window 4 enable. 0: inhibit the card enable signals to the pc card when a memory access occurs within the corresponding system memory address window. 1: generate the card enable signals when a memory access occurs within the corresponding system memory address window. when the system address is within the window, the computed address will be generated to the pc card. d3 memory window 3 enable. 0: inhibit the card enable signals to the pc card when a memory access occurs within the corresponding system memory address window. 1: generate the card enable signals when a memory access occurs within the corresponding system memory address window. when the system address is within the window, the computed address will be generated to the pc card. d2 memory window 2 enable. 0: inhibit the card enable signals to the pc card when a memory access occurs within the corresponding system memory address window. 1: generate the card enable signals when a memory access occurs within the corresponding system memory address window. when the system address is within the window, the computed address will be generated to the pc card. d1 memory window 1 enable. 0: inhibit the card enable signals to the pc card when a memory access occurs within the corresponding system memory address window. 1: generate the card enable signals when a memory access occurs within the corresponding system memory address window. when the system address is within the window, the computed address will be generated to the pc card. d0 memory window 0 enable. 0: inhibit the card enable signals to the pc card when a memory access occurs within the corresponding system memory address window. 1: generate the card enable signals when a memory access occurs within the corresponding system memory address window. when the system address is within the window, the computed address will be generated to the pc card. note: the start, stop and offset registers pairs must all be set to the desired window values before setting bit to one.( all memory windows ). via technologies, inc. preliminary VT83C469 16 i/o control register ( read/write ) address : index ( base + 07h ) b it f unction d7 i/o window 1 wait state. 0: 16-bit system accesses occur with no additional wait state. 1: 16-bit system accesses occur with one additional wait state( 4 busclks ). d6 i/o window 1 zero wait state. 0: 8-bit system i/o access will occur with additional wait state. 1: 8-bit system i/o access will occur with no additional wait state and the nows# will be returned to the system bus. d5 i/o window 1 iocs16# source. 0: iocs16# is generated based on the value of the data size bit. 1: iocs16# is generated based on the iois16# signal from pc card. d4 i/o window 1 data size. 0: 8-bit i/o data path to pc card. 1: 16-bit i/o data path to pc card. d3 i/o window 0 wait state. 0: 16-bit system accesses occur with no additional wait state. 1: 16-bit system accesses occur with one additional wait state( 4 busclks ). d2 i/o window 0 zero wait state. 0: 8-bit system i/o access will occur with additional wait state. 1: 8-bit system i/o access will occur with no additional wait state and the nows# will be returned to the system bus. d1 i/o window 0 iocs16# source. 0: iocs16# is generated based on the value of the data size bit. 1: iocs16# is generated based on the iois16# signal from pc card. d0 i/o window 0 data size. 0: 8-bit i/o data path to pc card. 1: 16-bit i/o data path to pc card. i/o address start register low byte ( read/write ) address : window 0 index ( base + 08h ) address : window 1 index ( base + 0ch ) b it f unction d[7:0] i/o window start address a[7:0] low order address bits used to determine the start address of the corresponding i/o address window. this provides a minimum 1 byte window for i/o address window. i/o address start register high byte ( read/write ) address : window 0 index ( base + 09h ) address : window 1 index ( base + 0dh ) b it f unction d[7:0] i/o window start address a[15:8] high order address bits used to determine the start address of the corresponding i/o address window. via technologies, inc. preliminary VT83C469 17 i/o address stop register low byte ( read/write ) address : window 0 index ( base + 0ah ) address : window 1 index ( base + 0eh ) b it f unction d[7:0] i/o window stop address a[7:0] low order address bits used to determine the stop address of the corresponding i/o address window. this provides a minimum 1 byte window for i/o address window. i/o address stop register high byte ( read/write ) address : window 0 index ( base + 0bh ) address : window 1 index ( base + 0fh ) b it f unction d[7:0] i/o window stop address a[15:8] high order address bits used to determine the stop address of the corresponding i/o address window. system memory address mapping start low byte register ( read/write ) address : window 0 index ( base + 10h ) address : window 1 index ( base + 18h ) address : window 2 index ( base + 20h ) address : window 3 index ( base + 28h ) address : window 4 index ( base + 30h ) b it f unction d[7:0] system memory window start address a[19:12] low order address bits used to determine the start address of the corresponding system memory address mapping window. this provides a minimum 4k bytes window for memory address mapping window. system memory address mapping stop high byte register ( read/write ) address : window 0 index ( base + 11h ) address : window 1 index ( base + 19h ) address : window 2 index ( base + 21h ) address : window 3 index ( base + 29h ) address : window 4 index ( base + 31h ) b it f unction d7 data size. 0: 8-bit memory data path to the pc card. 1: 16-bit memory data path to the pc card. d6 zero wait state. 0: system memory access will occur with additional wait states. 1: system memory access will occur with no additional wait states and the nows# signal will be returned to the system bus. the wait# signal from pc card will override this bit. d[5:4] r/w. 00 d[3:0] system memory window start address a23:20. high order address bits used to determine the start address of the corresponding system memory address mapping window. via technologies, inc. preliminary VT83C469 18 system memory address mapping stop low byte register ( read/write ) address : window 0 index ( base + 12h ) address : window 1 index ( base + 1ah ) address : window 2 index ( base + 22h ) address : window 3 index ( base + 2ah ) address : window 4 index ( base + 32h ) b it f unction d[7:0] system memory window stop address a[19:12] low order address bits used to determine the stop address of the corresponding system memory address mapping window. this provides a minimum 4k bytes window for memory address mapping window. system memory address mapping start high byte register ( read/write ) address : window 0 index ( base + 13h ) address : window 1 index ( base + 1bh ) address : window 2 index ( base + 23h ) address : window 3 index ( base + 2bh ) address : window 4 index ( base + 33h ) b it f unction d[7:6] wait state bit 1:0. these bits determine the number of additional wait states for a 16-bit access to the system memory window. if the pc card supports the wait# signal, wait states will be generated by the pc card asserting the wait# signal. 00: standard 16-bit cycle ( 3 busclks per access ) 01: 1 additional wait state ( 4 busclks per access ) 10: 2 additional wait states ( 5 busclks per access ) 11: 3 additional wait states ( 6 busclks per access ) d[5:4] r/w. 00 d[3:0] system memory window stop address a23:20. high order address bits used to determine the stop address of the corresponding system memory window. system memory address mapping offset low byte register ( read/write ) address : window 0 index ( base + 14h ) address : window 1 index ( base + 1ch ) address : window 2 index ( base + 24h ) address : window 3 index ( base + 2ch ) address : window 4 index ( base + 34h ) b it f unction d[7:0] system memory window offset address a[19:12] low order address bits which added to the system address bits a19:12 to generate card address. via technologies, inc. preliminary VT83C469 19 system memory address mapping offset high byte register ( read/write ) address : window 0 index ( base + 15h ) address : window 1 index ( base + 1dh ) address : window 2 index ( base + 25h ) address : window 3 index ( base + 2dh ) address : window 4 index ( base + 35h ) b it f unction d7 write protect. 0: write operations to pc card through the corresponding system memory window are allowed. 1: write operations to pc card through the corresponding system memory window are inhibited. d6 reg active. 0: access to the system memory will result in common memory space. 1: access to the system memory will result in attribute memory space. d[5:0] card memory offset address a25:20. high order address bits which are added to the system address a23:20 to generate card address. e xtension r egisters misc. control 1 register ( read/write ) address : index ( base + 16h ) b it f unction d7 inpack support. 0: inpack not support. 1: inpack used to control data bus drivers during i/o read from the pc card. d[6:5] reserved d4 speaker enable. 0: spkcsel# is tri-state. 1: spkcsel# is driven form the xor of spkr# from each enabled pc card. d[3:2] reserved d1 v cc 3v. this bit dtermines which output pin is to be used to enable v cc power to be the socket when card power is to be applied. it is used in conjunction with bits 5-4 of the power control register. when this bit is "1," the 3.3v v cc is applied to the pc card. when this bit is "0," 3.3v or 5v v cc is determined by the det_5 pin. d0 this bit is connected to pcmcia pin 43. cards that will operate at 3.3v will drive this pin to a "0." via technologies, inc. preliminary VT83C469 20 misc. control 2 register ( read/write ) address : index ( base + 1eh ) b it f unction d7 rioled is ri out. this bit determines the function of the rioled. when configured for ring indicate, rioled is used to resume the 386sl when a high to low change is detected on the stschg#. 0: tri-state rioled if rioled is not used as led output 1: rioled is connected to ring indicate on the processor. d6 r/w. 0 d5 tri-state sd7 bit. this bit enables floppy change bit compatibility. 0: normal operation. 1: for i/o pc card at address 03f7h and 0377h, do not drive sd7 bit. d4 drive led enable. this bit determines when spkr# is used to drive an led on rioled for disk access. 0: tri-state rioled if rioled is not used as ri out. 1: rioled becomes an open drain output suitable for driving an led. d[3:0] r/w. 0000 compatible chip information with cirrus logic cl-6722 register ( read/write ) address : index ( base + 1fh ) b it f unction d[7:6] chip identification. ( read only ) this field identifies the VT83C469 device and compatible with cirrus logic cl-6722 device. for the first read of this register this field will be 11h; on the next read will be 00h. d5 dual/single socket. ( read only ) this bit will be 1b, because the VT83C469 is support two sockets. d[4:2] VT83C469 revision. ( read only ) this field identifies the revision of this controller. it's initial value is 110h. d[1:0] r/w. 00 via technologies, inc. preliminary VT83C469 21 ata mode control register ( read/write ) address : index ( base + 26h ) b it f unction d7 a25/csel. in ata mode, this bit is applied to the ata a25/csel and is vendor specific. certain ata drive vendor specific performance enhancements beyond the pcmcia 2.0 standard may be controlled through use of this bit. this bit has no hardware control function when not in ata mode. d6 a24/m/s#. in ata mode, this bit is applied to the ata a24/m/s# and is vendor specific. certain ata drive vendor specific performance enhancements beyond the pcmcia 2.0 standard may be controlled through use of this bit. this bit has no hardware control function when not in ata mode. d5 a23/vu. in ata mode, this bit is applied to the ata a23/vu and is vendor specific. certain ata drive vendor specific performance enhancements beyond the pcmcia 2.0 standard may be controlled through use of this bit. this bit has no hardware control function when not in ata mode. d4 a22. in ata mode, this bit is applied to the ata a22 and is vendor specific. certain ata drive vendor specific performance enhancements beyond the pcmcia 2.0 standard may be controlled through use of this bit. this bit has no hardware control function when not in ata mode. 9d3 a21. in ata mode, this bit is applied to the ata a21 and is vendor specific. certain ata drive vendor specific performance enhancements beyond the pcmcia 2.0 standard may be controlled through use of this bit. this bit has no hardware control function when not in ata mode. d2 r/w. 0 d1 speaker is led input. 0: normal operation. 1: the pc card spkr# pin will be used to drive irq12 if drive led enable is set. d0 ata mode. 0: normal operation. 1: configures the socket interface to handle ata type iii disk drives. via id register (read) address : index (base + 2eh) b it f unction d [7:4] major version r. 1000 d [3:0] minor version r. 0001 via technologies, inc. preliminary VT83C469 22 dma control (read/write) address : index (base + 2fh) b it f unction d [7:6] dma enable. at reset these bits are set to a "0," which is the non-dma mode. if either or both of these bits is set, the socket is in dma mode. the three codes select the use of one of three pins for the active low dreq# input at the pcmcia interface. 01: inpack# 10: wp/iois16# 11: bvd2/spkr# d5 reserved. d4 dma data size 0: during dma read/write cycles, data size is 8-bit. 1: during dam read/write cycles, data size is 16-bit. the i/o window data size bit in i/o control register and the iois16# signal are irrelevant during actual dma cycles. d [3:0] reserved. via technologies, inc. preliminary VT83C469 23 VT83C469 p in d escription b us t ype s ignal d escription p in t ype i aen system address enable. high during dma cycles, low otherwise 204 i i bale bus address latch enable. an active high input used to latch la [23:17] at the beginning of the bus cycle 205 i s bvd1 (stschg#/ ri#) if bvd1 is negated by a memory pc card with a battery, it indicates that the battery is no longer serviceable and data is lost. for i/o pc cards, this signal is held high when either or both the signal on change bit and changed bit in the card status register on the pc card are set to zero. when both of the bits are one, the signal is held low. the changed bit is the logical or of the bits cvbat1, cvbat2, cwp and cbsyrdy in the pin replacement register on the pc card. or this pin is connected to ring indicate, which is qualified by ring indicate enable to be passed on to the *rio pin. 54, 125 i s bvd2 (spkr#) bvd1 and bvd2 are generated by memory pc cards with onboard batteries. these signals indicate the health of the battery. both are asserted high when the battery is in good condition. when bvd2 is negated while bvd1 is still asserted, the battery should be replaced, although data integrity on the memory pc card is still assured. when the i/o interface is selected, bvd2 may be used to provide a single amplitude digital audio waveform intended to be passed through to the system's speaker without signal conditioning. 52, 123 i s ca [25:0] card address 15,19, 21, 23- 26, 28, 31, 33- 41, 43-44, 46, 48, 50-51, 53, 86, 90, 92, 94- 99, 102, 104- 107, 109-115, 117, 119, 121- 122, 124 o s cd# [2:1] detects proper card insertion. the signals are connected to ground internally on the pc card and will be forced low whenever a card is placed in a host socket. status is available to software through the interface status register. 63, 3, 134, 74 i s ce# [2:1] active low card enable signals. ce#1 is used to enable even bytes, ce#2 for odd bytes. a multiplexing scheme based on a0, ce#1, ce#2 allows 8-bit hosts to access all data on card data [7:0] if desired. 89, 83, 18, 11 o i clk system clock 187 i via technologies, inc. preliminary VT83C469 24 b us t ype s ignal d escription p in t ype i d [15:0] card data 2, 4-10, 12, 13, 55-58, 60, 62, 73, 76-82, 84- 85, 126-130, 133 i/o i hdack# hdack: host dma acknowledge 67 i i htc htc: host terminal count 68 i s inpack# input acknowledge. asserted by some pc cards during i/o read cycles. this signal is used by the vg-468 to control the enable of its input data buffer between the card and cpu. 49, 120 i s intr# interrupt request output: active low output requesting a nonmaskable interrupt to the cpu. also, a resistor strapping input during resetdrv to determine the mapping of socket a and socket b to one of four groups. 152 i/o i iochrdy i/o channel ready. this active high signal indicates that the current i/o bus cycle has been completed. when a pc card needs to extend a read or write cycle, the vg-468 pulls iochrdy low. iochrdy can be deasserted by either wait#, or by programming to add wait states for 16-bit memory and i/o cycles. if wait# is used in 16-bit mode, the wait state generator has to be set to 1 wait state. 150 o i iocs16# this active low i/o 16-bit chip select signal indicates to the host system the current i/o cycle is a 16-bit access. a 16-bit to 8-bit conversion is done if it is inactive. 148 o i iord# i/o read signal is driven active to read data from the pc card's i/o space. the reg# signal and at least one of the card enable signals must also be active for the i/o transfer to take place. 20, 91 o i iowr# i/o write signal is driven active to write data to the pc card's i/o space. the reg# signal and at least one of the card enable signals must also be active for the i/o transfer to take place. 22, 93 o i irqs irq [15, 14, 12:9, 7, 5:3] 136-140, 146- 142 o i la [23:17] local address bus used to address memory devices on the isa- bus. together with the system address signals, they address up to 16mb on the isa bus. 181-175 i i memcs16# this active low 16-bit memory chip select signal indicates to the host system that the current memory cycle is a 16-bit access cycle. a 16-bit to 8-bit conversion is done if it is inactive. 149 o i memr# active low signal indicated a memory read cycle. 174 i i memw# active low signal indicates a memory write cycle. 174 i s oe# active low signal used to gate memory reads from memory cards. 16, 87 o via technologies, inc. preliminary VT83C469 25 b us t ype s ignal d escription p in t ype i hdreq host dma request. this is the dma request from a dma device to the host. 208 i rdy/ bsy# (ireq#) memory pc cards drive ready/busy# low to indicate that the memory card circuits are busy processing a previous write command. it is set high when they are ready to accept a new data transfer command. for i/o pc cards, this pin is used as an interrupt request and driven low to indicate to the host that a device on the i/o pc card requires service by the host software. the signal is held at the inactive level when no interrupt is requested. 32, 103 i s reg# select attribute memory. this signal is set inactive (high) for all accesses to common memory of a pc card. when it is active, access is limited to attribute memory when we# or oe# are active, and to i/o ports when iord# or iowr# are active. i/o pc cards will not respond to iord# or iowr# when the reg# signal is inactive. during dma operations the reg# signal is inactive. 1, 72 o s reset provides a hard reset to a pc card and clears the card configuration option register, thus placing card in an unconfigured (memory interface) state. 45, 116 o i resetdrv active high indicates a main system reset. 189 i s rio#/led ring indicate output. pass through of ring indicate output from i/o pc card. vg-468 can also be configured to activate rio# on card detect changes. rio# will be functional in cs# controlled power down. when disk drive led enable is set, this signal becomes a driver for disk drive led. also, a resistor strapping input during resetdrv to determine the functions of pin b_ca [11:4]. 151 i/o i sa [16:0] system address bus used to address memory and i/o devices on the isa bus. these signals are latched and are valid throughout the bus cycle. 203-192, 190, 186-183 i i sbhe# system byte high enable. when asserted, this active low signal indicates that a data transfer is occurring on the upper byte of the system data bus. i sd [15:0] system data bus. 155-162, 172- 170, 168, 167, 165-163 i/o i sior# this active low i/o read signal instructs the vg-468 to drive data onto the data bus. 206 i i siow# this active low i/o write signal instructs the vg-468 to latch the data on the data bus. 207 i via technologies, inc. preliminary VT83C469 26 b us t ype s ignal d escription p in t ype misc spkrout# digital audio signal which provides a single amplitude (digital) audio waveform to drive the system's speaker. passes through spkr# from an i/o pc card. this signal must be held high when no audio signal is present. also, a resistor strapping input during resetdrv to determine the mapping of socket a and socket b to one of four groups. 153 i/o s 5ven power control signal for card vcc. 66, 69 o s vpp1en1 power control signal for card vpp1 65, 70 o s vpp2en1 power control signal for card vpp2 64, 71 o s wait# this signal is driven by the pc card to delay completion of the memory or i/o cycle in progress. 47. 118 i swe#/prgm # the host uses we# for gating memory write data, and for memory pc cards that employ programmable memory. 30, 100 o swp (iois16#) reflects the status of the write protect switch on some memory pc cards. if the memory pc card has no write protect switch, the card will connect this line to ground (the card can always be written) or to vcc (permanently write protected). when the i/o interface is selected, this pin is used for the "i/o is 16-bit port" function: asserted by the pc card when the address on the bus corresponds to an address to which the pc card responds, and the i/o port which is addressed is capable of 16 bit access. if this signal is not asserted during a 16-bit i/o access, the system will generate 8-bit references to the even and odd byte of the 16-bit port being accessed. if the 8-bit window size is selected, the iois16# is ignored. 61, 132 i i zws# zero wait state. an active low output indicates that the pc card wishes to terminate the present bus cycle without inserting additional wait states. this cycle will not be driven during a 16- bit i/o access. 147 o s a_vcc socket a power signal for 3.3v or 5v 17, 59 p s b_vcc socket b power signal for 3.3v or 5v 88, 108 p via technologies, inc. preliminary VT83C469 27 VT83C469 n umerical p inout p in n o . p in n ame p in n o . p in n ame p in n o . p in n ame p in n o . p in n ame 1 a_reg 53 a_ca0 105 b_ca16 157 sd13 2 a_d3 54 a_bvd1 106 b_ca22 158 sd12 3 a_cd1# 55 a_d0 107 b_ca15 159 sd11 4 a_d4 56 a_d8 108 b_vcc 160 sd10 5 a_d11 57 a_d1 109 b_ca23 161 sd9 6 a_d5 58 a_d9 110 b_ca12 162 sd8 7 a_d6 59 a_vcc 111 b_ca24 163 sd0 8 a_d12 60 a_d2 112 b_ca7 164 sd1 9 a_d13 61 a_wp 113 b_ca25 165 sd2 10 a_d7 62 a_d10 114 b_ca6 166 vcc 11 a_ce1# 63 a_cd2# 115 b_ca5 167 sd3 12 a_d14 64 a_vpp2en1 116 b_reset 168 sd4 13 a_d15 65 a_vpp1en1 117 b_va4 169 gnd 14 gnd 66 a_5ven 118 b_wait# 170 sd5 15 a_ca10 67 hdack# 119 b_ca3 171 sd6 16 a_oe# 68 htc 120 b_inpack# 172 sd7 17 a_vcc 69 b_5ven 121 b_ca2 173 memw# 18 a_ce2# 70 b_vpp1en1 122 b_ca1 174 memr# 19 a_ca11 71 b_vpp2en1 123 b_bvd2 175 la17 20 a_iord# 72 b_reg# 124 b_ca0 176 la18 21 a_ca9 73 b_d3 125 b_bvd1 177 la19 22 a_iowr# 74 b_cd1# 126 b_d0 178 la20 23 a_ca8 75 gnd 127 b_d8 179 la21 24 a_ca17 76 b_d4 128 b_d1 180 la22 25 a_ca13 77 b_d11 129 b_d9 181 la23 26 a_ca18 78 b_d5 130 b_d2 182 sbhe# 27 a_3ven 79 b_d6 131 b_gnd 183 sa0 28 a_ca14 80 b_d12 132 b_wp 184 sa1 29 a_ca19 81 b_d13 133 b_d10 185 sa2 30 a_we# 82 b_d7 134 b_cd2# 186 sa3 31 a_ca20 83 b_ce1# 135 gnd 187 clk 32 a_rdy 84 b_d14 136 irq 15 188 gnd 33 a_ca21 85 b_d15 137 irq 14 189 resetdrv 34 a_ca16 86 b_ca10 138 irq 12 190 sa4 35 a_ca22 87 b_oe# 139 irq 11 191 a_5vdet 36 a_ca15 88 b_vcc 140 irq 10 192 sa5 37 a_ca23 89 b_ce2# 141 b_5vdet 193 sa6 38 a_ca12 90 b_ca11 142 irq 3 194 sa7 39 a_ca24 91 b_iord# 143 irq 4 195 sa8 40 a_ca7 92 b_ca9 144 irq 5 196 sa9 41 a_ca25 93 b_iowr# 145 irq 7 197 sa10 42 gnd 94 b_ca8 146 irq 9 198 sa11 43 a_ca6 95 b_ca17 147 zws# 199 sa12 44 a_ca5 96 b_ca13 148 iocs16# 200 sa13 45 a_reset 97 b_ca18 149 memcs16# 201 sa14 46 a_ca4 98 b_ca14 150 iochry 202 sa15 47 a_wait# 99 b_ca19 151 rio# 203 sa16 48 a_ca3 100 b_we# 152 intr# 204 aen 49 a_inpack# 101 b_3ven 153 spkrout# 205 bale 50 a_ca2 102 b_ca20 154 gnd 206 sior# 51 a_ca1 103 b_rdy 155 sd15 207 siow# 52 a_bvd2 104 b_ca21 156 sd14 208 hdreq via technologies, inc. preliminary VT83C469 28 VT83C469 p in d iagram via technologies, inc. preliminary VT83C469 29 e lectrical c haracteristics absolute maximum ratings parameter min max unit ambient operating temperature 070 o c storate temperature -55 125 o c input voltage -0.5 5.5 v output voltage -0.5 5.5 v note : stress above these listed cause permanent damage to device. functional operation of this device should be restricted to the conditions described under operating conditions. dc characteristics ta-0-70 o c, v dd =5v=/-5%, gnd=0v symbol parameter min max unit condition v il input low voltage -.50 0.8 v v ih imput high voltage 2.0 v dd +0.5 v v ol output low voltage - 0.45 v i ol =4.0ma v oh output high voltage 2.4 - v i oh =-1.0ma i il input leakage current - +/-10 ua 0 via technologies, inc. preliminary VT83C469 31 t23 wait# active to iochrdy inactive 16 t24 wait# inactive to iochrdy active 14 t25 ext_dir hold from isa read inactive 0 t26 aen valid to isa cmd active setup 40 t27 aen hold from isa command inactive 5 t28 ri_to ri_out delay 27 t29 spkr_ to spkr_out delay 18 t30 card status change to irq# valid 7 busclk t31 pcmcia ireq# to irqx delay 24 via technologies, inc. preliminary VT83C469 32 memory: standard/extended la<23:17> valid address sysclk t1 sa<16:0>,shbe# iochrdy cadr<25:12> ce#,reg# wait# ext_dir valid address valid address t7 t30 memr#,memw# memcs16# oe#,we# t5 t3 t2 t4 t10 t11 t22 t20 t21 t19 t13 t17 t18 t25 t14 t23 t24 via technologies, inc. preliminary VT83C469 33 io: standard / extended busclk la<23:17> valid address sa<16:0>,shbe# ior#,iow# iocs16# iochrdy cadr<25:12> ce#,reg# iord#,iowr# iois16# wait# ext_dir valid address valid address t8 t31 t5 t7 t9 t10 t11 t22 t16 t12 t19 t20 t21 t14 t17 t18 t23 t24 t15 t25 via technologies, inc. preliminary VT83C469 34 interrupt, ring indicate, speaker timings stschg(ri)# card status change ireq# irqx ri_out# spkr# spkr_out# t28 t28 t30 t31 t29 t29 aen setup and hold aen# isa:i/o cmd t26 t27 via technologies, inc. preliminary VT83C469 35 208-pin plastic flat package m 0.08 27.2+/-0.4 156 157 0.85typ 30.6+/-0.2 27.2+/-0.4 105 104 30.6+/-0.2 53 1 0.85typ 208 0.5 0.2+/-0.1 52 3.35+/-0.4 4.60max 0.1 0.55 +0.3 -0.2 29.6+/-0.4 0.15 +0.1 -0.05 0~10 o 0.5+/-0.2 via technologies, inc. preliminary VT83C469 36 p roject s ign o ff s heet f or VT83C469 p reliminary r elease n ame s ignature d ate e ditor alex tsao p roduct s pecifications jeffery chang p roject d esigner huang yu-chung f inal a pproval tzu-mu lin |
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