STA016 STMICROELECTRONICS [STMicroelectronics], STA016 Datasheet - Page 38

• Manufacturer Part Number: STA016
• Description: MPEG 2.5 LAYER III AUDIO DECODER SUPPORTING CD-ROM CAPABILITY
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STA016A
7.3 TTL Schmitt Trigger Inpud Pad Buffer, 3V capable / Pin numbers:17, 60, 63
7.4 TTL Inpud Pad Buffer, 3V capable with Pull-Up / Pin numbers:15, 16
7.5 TTL Schmitt Trigger Bidir Pad Buffer, with Pull-up, 4mA, with slew rate control / 3V capable
7.6 TTL Input Pad Buffer, 3V capable, with pull down / Pin numbers: 12, 13, 14, 55
8
General Information About The Command Protocol
I2C protocol :
CD_module & mmdsp are using an I2C protocol to communicate : CD_module is master of the I2C protocol,
and can access (in read and write mode) host registers of the STA016A to write commands to the mmdsp and
to read request from the mmdsp. It must use following I2C syntax :
where :
Writing a command to mmdsp :
CD_module write its command inside dedicated host registers (mainly H64 to H69), then it must signals the writ-
ing of this command to mmdsp by sending the interrupt IT_CMD to the core of mmdsp.
Note that IT_CMD is generated by cd_module threw a falling edge on the input line number 0 of the STA016A
38/43
Pin numbers: 26, 27, 28, 31, 32, 33, 34, 35, 44, 45, 46, 47, 48, 49, 50, 51, 64
COMMAND PROTOCOL CONFIGURATION
device_address, host_register_number, host_register_value
for a write acces, device_address is 0x86.
for a read acces, device_address is 0x87.
A
A
A
EN
ZI
A
D00AU1150
D00AU1222
D98AU906
D98AU907
IO
Z
Z
Z
INPUT PIN
IO
INPUT PIN
INPUT PIN
INPUT PIN
A
A
A
CAPACITANCE
TBD
OUTPUT
CAPACITANCE
CAPACITANCE
CAPACITANCE
PIN
IO
TBD
TBD
TBD
LOAD
100pF
MAX