TC9496AF Datasheet, PDF (9/48 Pages) Toshiba Semiconductor – 1 Chip Audio Digital Signal Processor

2. Microcontroller interface
TC9496AF
2.1 Standard Transmission Mode
When I2CS = L, data can be transmitted or received in Standard Transmission mode.
When the CS signal is Low, control from the microcontroller is enabled.
The IFCK signal is the transmit/receive clock, the IFDI signal is the data.
The TC9496AF loads the IFDI data on the IFCK signal rising edge.
When CS = H, the IFCK and IFDI signals are don’t care.
2.1.1 Setting Registers
CS
IFCK
IFDI
Don’t care
IFOK
C7 C5 C3 C1 D15 D13 D11 D9 D7 D5 D3 D1
C6 C4 C2 C0 D14 D12 D10 D8 D6 D4 D2 D0 Don’t care
Cn: COMMAND
Dn: Data
The registers are set by command data using IFDI signal.
The first byte is a command, which differs for each register. The data sent after that are fixed to
two bytes. Both command and data are sent starting from the MSB.
Data are loaded the rising edge of the IFCK signal. Note that commands or data that must be
switched, such as the RUN-MUTE command (command-44h) or the IFF flag, must be synchronized
with the SYNC signal and loaded on that signal.
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2002-01-11