FW82801ER S L742 Intel, FW82801ER S L742 Datasheet - Page 252
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FW82801ER S L742
Manufacturer Part Number
FW82801ER S L742
Description
Manufacturer
Intel
Datasheet
1.FW82801ER_S_L742.pdf
(671 pages)
Specifications of FW82801ER S L742
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Functional Description
252
Table 125. Features Supported by Intel
Figure 25. Intel
Note: Throughout this document, references to D31:F5 indicate that the audio function exists in PCI
Note: Throughout this document references to tertiary, third, or triple codecs refer to the third codec in
Device 31, Function 5. References to D31:F6 indicate that the modem function exists in PCI
Device 31, Function 6.
the system connected to the AC_SDIN2 pin. The AC ’97 v2.3 Specification refers to non-primary
codecs as multiple secondary codecs. To avoid confusion and excess verbiage, this datasheet refers
to it as the third or tertiary codec.
PCI Modem
function
AC-link
Multiple Codec
Feature
®
ICH5-Based Audio Codec ’97 Specification, Version 2.3
NOTES:
1. Audio Codec IDs are remappable and not limited to 00,01,10.
2. Modem Codec IDs are remappable and limited to 00, 01.
3. When using multiple codecs, the Modem Codec must be ID 01.
• Read/write access to modem codec registers 3Ch–58h and vendor registers
• 16-bit mono modem line1 output and input, up to 48 kHz (slot 5)
• Low latency GPIO[15:0] via hardwired update between slot 12 and PCI I/O register
• Programmable PCI interrupt on modem GPIO input changes via slot 12 GPIO_INT
• SCI event generation on AC_SDIN[2:0] wake-up signal
• AC ’97 2.3 AC-link interface
• Variable sample rate output support via AC ’97 SLOTREQ protocol (slots
• Variable sample rate input support via monitoring of slot valid tag bits (slots 3,4,5,6)
• 3.3 V digital operation meets AC ’97 2.3 DC switching levels
• AC-link I/O driver capability meets AC ’97 2.3 triple codec specifications
• Codec register status reads must be returned with data in the next AC-link frame, per
• Triple codec addressing: All AC ’97 Audio codec register accesses are addressable to
• Modem codec addressing: All AC ‘97 Modem codec register accesses are
• Triple codec receive capability via AC_SDIN[2:0] pins
• AC_SDIN mapping to DMA engine mapping capability allows for simultaneous input
PC
5Ah–7Eh
3,4,5,6,7,8,9,10,11)
AC ’97 v2.3 Specification.
codec ID 00 (primary), codec ID 01 (secondary), or codec ID 10 (tertiary).
addressable to codec ID 00 (primary) or codec ID 01 (secondary).
(AC_SDIN[2:0] frames are internally validated, synchronized, and OR’d depending on
the Steer Enable bit status in the SDM register)
from two different audio codecs.
®
ICH5 (Sheet 2 of 2)
Intel
®
Description
82801EB ICH5 / 82801ER ICH5R Datasheet
Mic.2
Modem
Audio In (Record)
Audio Out (6 Channel Playback)
Mic.1
S/PDIF* Output
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