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Hardware Specifications
Doc. No. MV-S104859-U0 Rev. E Copyright © 2008 Marvell
Page 40 Document Classification: Proprietary Information December 2, 2008, Preliminary
1.2.15 Audio (S/PDIF / I2S) Interface
Note
All of the Audio signals are multiplexed on the MPP pins (see Section 4, Pin

Multiplexing, on page 51).

If the Audio interface is not used, leave all of the signals unconnected.
The Audio signals are powered on VDDO or on VDD_GE_B, based on the pin

multiplexing option.

Table 17: Audio (S/PDIF / I2S) Interface Signal Assignment

Pin Name I/O Pin
Type Power
Rail Description
AU_SPDIFI I CMOS VDDO/
VDD_GE_B S/PDIF In
AU_SPDIFO O CMOS VDDO/
VDD_GE_B S/PDIF Out
AU_
SPDFRMCLK O CMOS VDDO/
VDD_GE_B S/PDIF Recovered Master Clock (256 x Fs)1
For the frequency of this clock, see the Audio External
Reference Clock section of Table45, Reference Clock AC
Timing Specifications, on page86.
AU_I2SBCLK O CMOS VDDO/
VDD_GE_B I2S Bit Clock (64 x Fs)
AU_I2SDO O CMOS VDDO/
VDD_GE_B Transmitter Data Out
AU_I2SLRCLK O CMOS VDDO/
VDD_GE_B I2S Left/Right Clock (1 x Fs)
AU_I2SMCLK O CMOS VDDO/
VDD_GE_B I2S Master Clock (256 x Fs)
AU_I2SDI I CMOS VDDO/
VDD_GE_B I2S Receiver Data In
AU_EXTCLK I CMOS VDDO/
VDD_GE_B External Audio Clock
For the frequency of this clock, see the Audio External
Reference Clock section of Table45, Reference Clock AC
Timing Specifications, on page86.

1. Fs is the audio sample rate.