ES1988 Datasheet, PDF (5/6 Pages) List of Unclassifed Manufacturers – PCI Audio-Modem Accelerator Product Brief

ES1988 PRODUCT BRIEF
Table 1 ES1988 Pin Descriptions (Continued)
Names
Pin Numbers
I/O
SDI2
GPIO8
I
56
I/O
OSCI
57
I
OSCO
58
O
SRESET2#
GPIO3
O
59
I/O
SDFS2
O
GPIO9
(note)
60
I/O
SCLK2
GPIO10
SDO2
O
61
I/O
O
GPIO11
VAUXD
I/O
62
I
PCGNT#
GT0#
GS0
GPIO12
PC_BEEP
PHONE
CD_L
CD_GND
CD_R
MIC
LINE_IN_L
LINE_IN_R
AVDD[2:1]
AVSS[2:1]
VREF
I
O
63
O
I/O
64
I
65
I
66
I
67
I
68
I
69
I
70
I
71
I
83, 72
I
82, 73
I
74
O
Descriptions
External AC-link serial data input. Select secondary codec by enabling Allegro_Base+38h [5] =
1.
General-purpose input/output.
49.152-MHz crystal input.
49.152-MHz crystal output.
Reset output for AC-Link interface. Select secondary codec by enabling Allegro_Base+38h [5] =
1.
General-purpose input/output.
Serial data frame sync output for AC-Link interface. Select secondary codec by enabling
Allegro_Base+38h [5] = 1.
General-purpose input/output.
If a pull-down resistor is used on this pin, the ES1988 is configured as a multifunction device
(audio-modem). Otherwise, the ES1988 is configured as a single function audio-only device.
Serial clock for AC-link interface. Select secondary codec by enabling Allegro_Base+38h [5] = 1.
General-purpose input/output.
External AC-link serial data output. Select secondary codec by enabling Allegro_Base+38h [5] =
1.
General-purpose input/output.
V_AUX detect. During the reset period, the V_AUXD pin is driven high to indicate ACPI support in the
D3_cold state, and is driven low to indicate ACPI is not supported in the D3_cold state. If V_AUX is not
supported, then V_AUX (pin 55) should be connected to VCC and V_AUXD (pin 62) should be pulled
down.
PC/PCI grant input. Enable PC/PCI by setting PCI 50h [10:8] = 010. Select PCGNT# from pin 63
by setting Allegro_Base+58h [6] = 0. Either pin 54 or pin 63 may be used for PCGNT#.
Grant to PCI master. GTO# is enabled by setting PCIx2 arbiter bits PCI 58h [0] = 1 and PCI 58h
[11] = 1. Select GT0#/GSO from pin 63 by enabling PCI 58h [10] = 1. Pin 51 may also be used as
GT0#/GSO.
Grant select 0 output to control external quick switch to grant PCI master phase. GSO is enabled
by setting PCIx2 arbiter bit PCI 58h [0] = 1 and PCI 58h [11] = 0. Select GS0/GT0# from pin 63
by enabling PCI 58h [10] = 1. Pin 51 may also be used as GT0#/GSO.
General-purpose input/output.
PC Speaker input.
Mono input.
CD-audio left channel input.
CD-audio ground input.
CD-audio right channel input.
Microphone input.
Line left channel input.
Line right channel input.
Analog supply voltage, 5V.
Analog ground.
Reference voltage.
ESS Technology, Inc.
SAM0368-030601
5