ES1946 ESS Technology, Inc., ES1946 Datasheet - Page 4

• Manufacturer Part Number: ES1946
• Manufacturer: ESS Technology, Inc.

Table 1
ORDERING INFORMATION
ESS Technology, Inc.
48401 Fremont Blvd.
Fremont, CA 94538
Tel: [phone]
Fax: [phone]
4
Names
PCSPKO
PCSPKI
MSO
MSI
SIRQ
SECLK
SEDO
IISLR
INTAB
PCPCIREQB
PCPCIGNTB
CLKRUNB
PRSTB
PCLK
GNTB
REQB
IDSEL
FRAMEB
IRDYB
TRDYB
DEVSELB
STOPB
LOCKB
PAR
a. 1
Part Number
ES1946S
a
pins are 5V pins with 3.3V digital supply on VDDD.
ES1946 Pin Descriptions (Continued)
Pin Numbers
PCI AudioDrive Controller for Notebook
53
54
55
56
57
58
59
60
61
62
63
65
66
67
68
78
90
91
92
93
94
95
96
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
a
a
Description
Analog output of PCSPKI with volume control.
Normally low digital PC speaker signal input. This signal is converted to an analog signal
with volume control and appears on analog output PCSPKO. 5V-tolerant input.
MIDI serial data output.
MIDI serial input. Schmitt trigger input with internal pull-up resistor. Either MPU-401 or
SoundBlaster formats.
Serialized IRQ.
Clock for serial EEPROM. Pull-up to VDDD via external 47k
Serial data input from EEPROM.
Left/Right strobe for I
PCI interrupt request.
PC/PCI serialized DREQ output (optional motherboard PC/PCI implementation).
PC/PCI serialized DACK input (optional motherboard PC/PCI implementation).
PCI clock state for power management.
PCI reset.
PCI clock. This clock times all PCI transactions.
PCI busmaster grant.
PCI busmaster request, tri-state output.
PCI device select for configuration.
PCI cycle frame.
PCI initiator ready.
PCI target ready.
PCI device select.
PCI stop transaction.
PCI lock.
PCI parity.
No part of this publication may be reproduced, stored in a
retrieval system, transmitted, or translated in any form or
by any means, electronic, mechanical, manual, optical, or
otherwise, without the prior written permission of ESS
Technology, Inc.
ESS Technology, Inc. makes no representations or
warranties regarding the content of this document.
All specifications are subject to change without prior
notice.
ESS Technology, Inc. assumes no responsibility for any
errors contained herein.
© 2001 ESS Technology, Inc. All rights reserved.
2
S interface.
100-pin LQFP
Package
Descriptions
(P) U.S. patents pending.
AudioDrive is a registered trademark of ESS Technology, Inc.
ESFM is a trademark of ESS Technology, Inc.
Certain audio features of this product manufactured under
a license from Desper Products, Inc., Spatializer and the
circle-in-square device are trademarks owned by Desper
Products, Inc. U. S. Patent numbers #4,308,423,
#4,355,203, #5,412,731.
All other trademarks are owned by their respective
holders and are used for identification purposes only.
ES1946 PRODUCT BRIEF
resistor.
SAM0217-030601