5 hardware suspend mode, 6 global reset signals – Ricoh R5C841 User Manual

Page 69

Advertising
background image

R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet

12345

2004

R

EV

. 1.10

5-16

5.3.5 Hardware Suspend mode

Timing chart for keeping the value of the internal register on the Suspend mode.

Hardware Suspend Timing

HWSPND#

VCC_PCI3V

PCI RST#

Tpd Tpu

Symbol Parameter

Min

Typ

Max

Unit

Tpd

HWSPND# to PCIRST# delay

100*

1

ns

Tpu

PCIRST# Setup time to HWSPND#

100*

1

ns

*

1

: PCICLK=33MHz

5.3.6 Global Reset signals

Timing chart for initializing the internal register on the Power’s on.

Global Reset Timing

GBRST#

VCC_3V,

VCC_MD3V

PCI RST#

3.0V

Tpres

Tprise

2.4V

0.5VCC_PCI3V

Tpspnd

HWSPND#

VCC_RIN

(Enabled regulator)

3.0V

3.0V

VCC_PCI3V

VCC_RIN,VCC_ROUT

(Disabled regulator)

1.65V

Symbol Parameter

Min

Typ

Max

Unit

Tpres

Power_On to GBRST# delay

1

100

ms

Tprise

GBRST# to PCIRST# delay

60*

2

ns

Tpspnd

HWSPND# to PCIRST# delay

100*

2

ns

*

2

: PCICLK=33MHz

Advertising