CM6533-N Datasheet, PDF (40/60 Pages) C-Media Electronics – USB 2.0 Full-Speed compliant

0 R/W
CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
cause pin INT_OUT to send out an interrupt for MCU.
After MCU responded with a Write-MAP-Address-0-Only
transaction and a subsequent read transaction, interrupt
INT_OUT will be de-asserted. However, if the MCU does
not act as what is expected (a write MAP-Address-0-Only
transaction and a subsequent read transaction), the
interrupt INT_OUT will be still de-asserted, but the ARC
initiated transaction status is used to signal a fail status
to ARC. In this case, the driver should consider to repeat
the failed Driver initiated transaction again.
Driver Acknowledge means driver has processed the
ack
current transaction.
Write 1 to acknowledge. This bit will be cleared
automatically.
0b
(POR)
6.8.16 I2C Using Example
Master mode write:
I2C write 2 bytes (Slave address =92, MAP address =01, Data=55, AA)
Write 0x80= 92 (Slave address)
Write 0x81 = 01 (MAP address)
Write 0x83~0x84 = 55 AA (Data register)
Write 0x93 = 02 (Data length 2 bytes)
Write 0x94 = 92 (I2C start)
Master mode read:
I2C read 2 bytes (Slave address=92, MAP address =01)
Write 0x80= 93 (Slave address)
Write 0x81 = 01 (MAP address)
Write 0x93 = 02 (Data length 2 bytes)
Write 0x94 = 92 (I2C start)
Read 0x83~0x84 (Data register)
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Rev.1.6
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