EP9301-EQ CIRRUS [Cirrus Logic], EP9301-EQ Datasheet - Page 7

• Manufacturer Part Number: EP9301-EQ
• Description: Entry-level ARM9 System-on-chip Processor
• Manufacturer: CIRRUS [Cirrus Logic]

Ethernet Media Access Controller (MAC)
The MAC subsystem is compliant with the ISO/TEC
802.3 topology for a single shared medium with several
stations. Multiple MII-compliant PHYs are supported.
Features include:
•
•
Serial Interfaces (SPI, I
The Serial Peripheral Interface (SPI) port can be
configured as a master or a slave, supporting the
National
Instruments
The AC'97 port supports multiple codecs for multichannel
audio output with a single stereo input. The I
supports stereo 24-bit audio.
These ports are multiplexed so that the I
over either the AC'97 pins or the SPI pins.
•
•
•
DS636PP5
MDC
MDIO
RXCLK
MIIRXD[3:0]
RXDVAL
RXERR
TXCLK
MIITXD[3:0]
TXEN
TXERR
CRS
CLD
Table C. Ethernet Media Access Controller Pin Assignments
Supports 1/10/100 Mbps transfer rates for home /
small-business / large-business applications
Interfaces to an off-chip PHY through industry
standard Media Independent Interface (MII)
Normal Mode: One SPI Port and one AC’97 Port
I
I
Note:
Pin Mnemonic
2
2
S on SSP Mode: One AC’97 Port and one I
S on AC’97 Mode: One SPI Port and one I
I
same time.
2
Semiconductor
S may not be output on AC’97 and SSP ports at the
®
signaling protocols.
Management Data Clock
Management Data I/O
Receive Clock
Receive Data
Receive Data Valid
Receive Data Error
Transmit Clock
Transmit Data
Transmit Enable
Transmit Error
Carrier Sense
Collision Detect
®
,
2
S, and AC ’97)
Motorola
Pin Description
©
Copyright 2005 Cirrus Logic (All Rights Reserved)
®
,
2
S port will take
and
2
2
S Port
S Port
2
S port
Texas
12-bit Analog-to-digital Converter (ADC)
The ADC block consists of a 12-bit analog-to-digital
converter with a analog input multiplexer. The multiplexer
can select to measure battery voltage and other
miscellaneous voltages on the external measurement
pins. Features include:
•
•
•
SCLK1
SFRM1
SSPRX1 SPI Serial Input
SSPTX1
ARSTn
ABITCLK AC'97 Bit Clock
ASYNC
ASDI
ASDO
Name
ADC[2] (sXm, pin 133)
ADC[4] (sYm, pin 131)
ADC[1] (sXp, pin 134)
ADC[3] (sYp, pin 132)
Pin
ADC[0] (Ym, pin 135)
Table E. 12-bit Analog-to-Digital Converter Pin Assignments
5 external pins for ADC measurement
Measurement pin input range: 0 to 3.3 V.
ADC-conversion-complete interrupt signal
Pin Mnemonic
AC'97 Serial
Output
SPI Bit Clock
SPI Frame Clock I2S Frame Clock
SPI Serial
Output
AC'97 Reset
AC'97 Frame
Clock
AC'97 Serial
Input
Normal Mode
Description
Table D. Audio Interfaces Pin Assignment
Entry Level ARM9 System-on-Chip Processor
Pin
AC'97 Serial Output I2S Serial Output
I2S Serial Clock
I2S Serial Input
I2S Serial Output
(No I2S Master
Clock)
AC'97 Reset
AC'97 Bit Clock
AC'97 Frame
Clock
AC'97 Serial Input I2S Serial Input
Pin Description Pin Description
External Analog Measurement Input
External Analog Measurement Input
External Analog Measurement Input
External Analog Measurement Input
External Analog Measurement Input
I
2
S on SSP
Mode
Pin Description
SPI Bit Clock
SPI Frame Clock
SPI Serial Input
SPI Serial Output
I2S Master Clock
I2S Serial Clock
I2S Frame Clock
I
2
S on AC'97
Mode
EP9301
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