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Data Sheet
ZL10310/ZL10311
33
Zarlink Semiconductor Inc.
6.12 Inter Integrated Circuit (I
2
C) Interface
The I
2
C interface provides a highly programmable interface to the industry-standard I
2
C (inter-integrated circuit)
serial bus. The I
2
C device contains a selection of functions that can be programmed to operate as a master, as a
slave, or as both a master and a slave on the I
2
C interface. I
2
C, unlike other designs, requires a minimum amount
of software to manage the I
2
C bus. In addition to sophisticated I
2
C bus protocol management, the I
2
C device
provides full data buffering, eliminating any time-dependent program interaction and further simplifying the task of
connecting to the I
2
C bus. The I
2
C interface complies with the Philips
Semiconductors I
2
C Specification, dated
1995.
Both the SCL and SDA pins require an external pull-up to 3.3V;
minimum resistor value of 1067 ohms.
6.13 Inter IC Sound (I
2
S) Audio Interface
The PCM Audio Output Controller provides an I
2
S Audio Interface. The audio outputs can be internally muted, and
a separate control output is not required. S/PDIF, surround, and center serial outputs can be obtained by using
Peripheral or General Purpose Port pins.
6.14 Clock and Reset Interface
The Clock and Reset interface provides inputs for the 2 primary clock signals, and also a System Reset input.
Pin Name
Pin No.
Pin Type
Description
I2C0_SCL
R25
O
I
2
C Bus Clock. Dedicated open drain clock.
I2C0_SDA
R26
O
I
2
C Bus Data. Dedicated open drain serial data/address.
Pin Name
Pin
No.
Pin
Type
Description
DA_BIT_CLK
C06
O
Digital Audio 64fs clock Output
DA_LR_CH_CLK
B04
O
Digital Audio Left-Right Channel Indicator Output.
A clock whose phase indicates the presence of left hand or right hand
data, and whose rate is equivalent to fs.
DA_OSAMP_CLK
A03
O
Digital Audio Oversampling Clock Output. 512/256 fs clock
DA_SER_DATA0
D06
O
Digital Audio Serial Data Output.
Main left and right serial audio data at a rate of 64fs
Pin Name
Pin
No.
Pin
Type
Description
OSC_PAD
C05
COFDM Crystal Oscillator - 20.48MHz Crystal Connection positive.
Also External 20.48MHz CXO Input
COFDM Crystal Oscillator - 20.48MHz Crystal Connection negative.
Main System Clock Input - 27MHz from External VCXO
Power-On Reset Input, from external POR generator. Active Low.
Must be held low for at least 100 microseconds after the 1.8V supply has
been established.
Connect to GND in normal operation. Defines production Test Mode B
OSC_PADN
CLK27_IN
NG_SYS_RST
B03
C18
A20
I
I
TMODE
B05
I