GS1503-CFZ Gennum Corp., GS1503-CFZ Datasheet - Page 22

• Manufacturer Part Number: GS1503-CFZ
• Description: HD EMBEDDED AUDIO CODEC
• Manufacturer: Gennum Corp.

1.6.2.2
A 6.144MHz (128fs) audio clock must be supplied to the
ACLKA and ACLKB inputs. The GS1503 divides this clock
by 2 to clock the 3.072MHz audio data. An audio word
clock at 48kHz (fs) must also be supplied to the WCINA
and WCINB inputs, as shown in Figure 21. The
AUDIO_CS[183:0] bits in Host Interface registers 058h to
06Eh can be used to enter the 23 8-bit bytes of the Audio
Channel Status Block, as defined in AES3-1992. NOTE: The
CRC byte is generated internally by the GS1503. The
GS1503 will default to Professional audio mode with 24-bit
word length and emphasis off. See Table 9.
AIN1/2, AIN3/4
AIN5/6, AIN7/8
ACLKA/B
WCINA/B
Serial Audio Input Modes
Y/C b / C r [19:0]
Audio Channels 1 & 2
Audio Channels 3 & 4
6.144MHz (128 fs)
48kHz (fs)
Audio Channels 5 & 6
Audio Channels 7 & 8
6.144MHz (128 fs)
48kHz (fs)
Fig. 21 Serial Audio Input Configuration and Timing
64 CLKs
22 of 83
VIN[19:0]
AIN1/2
AIN3/4
ACLKA
WCINA
AIN5/6
AIN7/8
ACLKB
WCINB
GS1503
64 CLKs
15879 - 4