ES1946 Datasheet, PDF (4/4 Pages) List of Unclassifed Manufacturers – PCI AudioDrive Notebook Solution Product Brief

ES1946 PRODUCT BRIEF
Table 1 ES1946 Pin Descriptions (Continued)
Names
Pin Numbers I/O
Descriptions
PCSPKO
53
O Analog output of PCSPKI with volume control.
PCSPKI
54
I^a 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.
MSO
55
O MIDI serial data output.
MSI
56
I^a MIDI serial input. Schmitt trigger input with internal pull-up resistor. Either MPU-401 or
SoundBlaster formats.
SIRQ
57
I/O Serialized IRQ.
SECLK
58
O Clock for serial EEPROM. Pull-up to VDDD via external 47k Ω resistor.
SEDO
IISLR
I Serial data input from EEPROM.
59
I Left/Right strobe for I²S interface.
INTAB
60
O PCI interrupt request.
PCPCIREQB
61
O PC/PCI serialized DREQ output (optional motherboard PC/PCI implementation).
PCPCIGNTB
62
I PC/PCI serialized DACK input (optional motherboard PC/PCI implementation).
CLKRUNB
63
I/O PCI clock state for power management.
PRSTB
65
I PCI reset.
PCLK
66
I PCI clock. This clock times all PCI transactions.
GNTB
67
I PCI busmaster grant.
REQB
68
O PCI busmaster request, tri-state output.
IDSEL
78
I PCI device select for configuration.
FRAMEB
90
I/O PCI cycle frame.
IRDYB
91
I/O PCI initiator ready.
TRDYB
92
I/O PCI target ready.
DEVSELB
93
I/O PCI device select.
STOPB
94
I/O PCI stop transaction.
LOCKB
95
I/O PCI lock.
PAR
96
I/O PCI parity.
a. 1^a pins are 5V pins with 3.3V digital supply on VDDD.
ORDERING INFORMATION
Part Number
ES1946S
Description
PCI AudioDrive Controller for Notebook
Package
100-pin LQFP
ESS Technology, Inc.
48401 Fremont Blvd.
Fremont, CA 94538
Tel: [phone]
Fax: [phone]
4
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.
(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.
© 2001 ESS Technology, Inc. All rights reserved.
SAM0217-030601