ES1938 ESS Technology, Inc., ES1938 Datasheet - Page 4

• Manufacturer Part Number: ES1938
• Manufacturer: ESS Technology, Inc.

Table 1 ES1938 Pin Descriptions (Continued)
ORDERING INFORMATION
ESS Technology, Inc.
48401 Fremont Blvd.
Fremont, CA 94538
Tel: [phone]
Fax: [phone]
4
Names
PCSPKO
PCSPKI
MSO
MSI
SIRQ
NC
INTAB
PCPCIREQB
PCPCIGNTB
CLKRUNB
PRSTB
PCLK
GNTB
REQB
IDSEL
FRAMEB
IRDYB
TRDYB
DEVSELB
STOPB
LOCKB
PAR
Part Number
ES1938S
Pin Numbers I/O
58, 59
PCI AudioDrive
53
54
55
56
57
60
61
62
63
65
66
67
68
78
90
91
92
93
94
95
96
Description
I/O Serialized IRQ. (Optional motherboard implementation.)
I/O PCI clock state for power management.
I/O PCI cycle frame.
I/O PCI initiator ready.
I/O PCI target ready.
I/O PCI device select.
I/O PCI stop transaction.
I/O PCI lock.
I/O PCI parity.
—
O
O
O
O
O
I
I
I
I
I
I
I
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.
MIDI serial data output.
MIDI serial input. Schmitt trigger input with internal pull-up resistor. Either MPU-401 or
SoundBlaster formats.
Reserved.
PCI interrupt request.
PC/PCI serialized DREQ output. (Optional motherboard implementation.)
PC/PCI serialized DACK input optional motherboard implementation.
PCI reset.
PCI clock. This clock times all PCI transactions.
PCI busmaster grant.
PCI busmaster request, tri-state output.
PCI device select for configuration.
100-pin LQFP
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.
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.
ES1938 PRODUCT BRIEF
SAM0290-030601