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LREQ_

---~---

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NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LOEV_1 is the LOEVO# pin of the 822.

LDEV_O is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LCNT _ is the LCNT# pin from the VL chip set to the 822.

82C822 PCIB DS-Ol-82C822-09 Page 35

82C822 PCIB

•

1 I I

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1 1

1 I I I

1

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---,

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NOTE RDY _ is the RDYRTN# pin of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

Page 36 05-01-82C822-09 82C822 PCIB

82C822 PCIB

Figure 6-11 DMA Write to Cache with Write-Back

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NOTE ROY_is the ROYRTN# pin of the local bus.

ROYL is the LROY# pin of the local bus.

NOTE LOEV _, is the LDEVO# pin of the 822.

LDEV_O is the LOEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

82C822 PCIB DS-01-82C822-09 Page 37

82C822 pels

Figure 6-12 DMA Read from Cache with Write-Back

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT_ is the LGNT# pin from the VL chip set to the 822.

Page 38 DS-01-82C822-09 82C822 PCIB

82C822 PCIS

Figure 6-13 ISA Master Write to PCI Slave

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NOTE RDY _ is the RDYRTN# pin of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV_1 is the LDEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LCNT _ is the LCNT# pin from the VL chip set to the 822.

82C822 PCIB 05-01-82C822-09 Page 39

82C822 PCIB

Page 40 DS-01-82C822-09

U

82C822 PCIB

Figure 6-15 ISA Master Write to DRAM

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r

-M16_

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LOEV _, is the LDEVO# pin of the 822.

LOEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT_ is the LGNT# pin from the VL chip set to the 822.

82C822 PCIB DS-01-82CB22-09 Page 41

82C822 PCIS

Figure 6-16 ISA Master Write to Cache with Write-Back Jl.I1

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.---,

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NOTE RDY_ is the RDYRTN# pin of the local bus.

RDY'_ is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set LGNT_ is the LGNT# pin from the VL chip set to the 822.

Page 42 D5-01-82C822-09

L..

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82C822 PCIS

82C822 PCIB

Figure 6-1 7 ISA Master Read from Cache with Write-Back

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NOTE ROY_is the RDYRTN# pi n of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LOEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

82C822 PCIB DS-01-82C822-09 Page 43

82C822 pelB

Figure 6-18 VESA Master Write to PCI Slave

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NOTE RDY_ is the RDYRTN# pin of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV_O is the LDEV# pin ofthe local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT_ is the LGNT# pin from the VL chip set to the 822.

Page 44 05-01-82C822-0.9 82C822 PCIB

82C822 pelB

Figure 6-19 DMA Write to ISA Slave

1 I

t

I I

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1

1

I

1-0 ^I

1

I

!

I I

I I

--,

I

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYL is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

mmH

82C822 PCIS DS-01-82C822-09 Page 45

82C822 PCIB

-Figure 6-20 DMA Read from ISA Slave

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NOTE RDY _ is the RDYRTN# pin of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV _ 0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

Page 46 05-01-82C822-0.9 82C822 PCIS

82C822 pelB

Figure 6-21 ISA Master Read from ISA Slave

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L...-1

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NOTE RDY _ is the RDYRTN# pin of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LDEV_O is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT_ is the LGNT# pin from the VL chip set to the 822.

82C822 PClB D5-01-82C822-09 Page 47

82C822 pels

Figure 6-22 ISA Master Write to ISA Slave

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r1=L:J ^{D I}

NOTE ROY_is the ROYRTN# pin of the local bus.

ROY'_ is the LROY# pin of the local bus.

NOTE LOEV _1 is the LDEVO# pin of the 822.

LDEV _0 is the LOEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

Page 48 DS-01-82C822-0.9 82C822 PCIB

Figure 6-23 DMA Write to VESA Slave

1 I

I

1 1 ;;oJ ^II

,

1

1

I

I

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the lROY# pin of the local bus.

NOTE LDEV_1 is the LDEVO# pin of the 822.

lOEV_O is the lOEV# pin of the local bus.

82C822 PCIB

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Page 49

82C822 PCIB

Figure 6-24 DMA Read from VESA Slave

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---7---~~r----NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LOEV _1 is the LDEVO# pin of the 822.

LOEV _0 is the LOEV# pin ofthe local bus.

Page 50 DS-01-82C822-09 82C822 PCIS

82C822 pelB

Figure 6-25 ISA Master Read from VESA Slave

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LOEV _, is the LOEVO# pin of the 822.

LDEV_O is the LOEV# pin of the local bus.

82C822 PCIB DS-Ol-82C822-09 Page 51

82C822 PCIB

Figure 6-26 VESA Master Write to VESA Slave

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ra

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1 ^I _I L-....J

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I I

I

!

_I ^{L--J ; I}

I

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I

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LOEV _1 is the LOEVO# pin of the 822.

LDEV _0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

Page 52 DS-01-82C822-09 82C822 PCIB

Figure 6-27 VESA Master Read from VESA Slave

I ^I _I

1 I ^I

U !..I ~

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u 2S

I ^I _I I ^I

I I

,

I ^I _I

1

,

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L...I ^I I I I

1 ⁰

,:

,

1 I

"5

1

0'

1

I

,

I . I

NOTE RDY _ is the RDYRTN# pin of the local bus, RDY'_ is the LRDY# pin of the local bus,

NOTE LDEV_1 is the LDEVO# pin of the 822, LDEV_O is the LDEV# pin of the local bus,

I I I I I I I I I I I

!

_I

I I

11111.

u

r-, LC

! 6

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set LGNT_ is the LGNT# pin from the VL chip set to the 822,

1'1

82C822 PCIS 05-01-82C822-09

82C822 PCIS

iJ iJ iJ

0

r-, ~ ^r-,

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Page 53

82C822 pels

Figure 6-28 VESA Master Read from DRAM

1

LJ

n

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n

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n

LJ

O Wo WCJ

^{W - -}

n....

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n

r l r l r l r l

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r

L-J L...J L...J !

1 L-J LJ I I

LJ LJ LJ

1

_---, ^w

L-J

^W 2T ^W & ^W J

^L

!:

I ~ I I ~ I

NOTE ROY_is the ROYRTN# pin of the local bus.

ROY 1_ is the LROY# pin of the local bus.

NOTE LDEV _1 is the LDEVO# pin of the 822.

LOEV _0 is the LOEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT_ is the LGNT# pin from the VL chip set to the 822.

Page 54 05-01-82C822-0.9 82(822 PCIS

82C822 PCIB

Figure 6-29 VESA Master Write to DRAM

NOTE ROY_is the ROYRTN# pin of the local bus.

ROYI_ is the LROY# pin of the local bus.

NOTE LDEV _1 is the LOEVO# pin of the 822.

LOEV _ 0 is the LOEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

82C822 PClB DS-01-82C822-0.9 Page 55

82C822 PCIS

;}

I ^I _I

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~

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, _!

I I

I

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NOTE RDY_ is the RDYRTN# pin of the local bus.

RDYI_ is the LRDY# pin of the local bus.

NOTE LDEV _, is the LDEVO# pin of the 822.

LDEV _ 0 is the LDEV# pin of the local bus.

NOTE LREQ_ is the LREQ# pin from the 822 to the VL chip set.

LGNT _ is the LGNT# pin from the VL chip set to the 822.

Page 56 DS-01-82C822-0.9 82C822 PCIB

82C822 PCIS

Figure 6-31 VESA Master Write to Cache

CPUCLK

-82C822 PCIB DS-01-82C822-09 Page 57

Dans le document Dniio 82C822 PCIB VESA local Bus to PCI Bridge Inter-face (Page 36-58)