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9. Multiplexing the AUD Pins in On-Chip Debugging Mode

The AUD pins are multiplexed as shown in table 3.5.

Table 3.5 Multiplexed Functions

Function 1 Function 2

WSCK TCK

WTXD TMS

WRXD _TRST

PB30/_UBCTRG/_IRQOUT _ASEBRKAK/_ASEBRK

PB22/RXD2/TCLKD/DACK2/FRAME _AUDSYNC

PB23/TXD2/TCLKC/DREQ2 AUDCK

PB24/RXD3/TCLKB/IRQ2/TEND1 AUDATA3

PB25/TXD3/TCLKA/IRQ3/DACK1 AUDATA2

PB26/SCK3/TIOC2B/DREQ1 AUDATA1

PB27/TXD3/TIOC2A/TEND0 AUDATA0

When the emulator is connected in on-chip debugging mode, function 1 cannot be used

because the emulator uses the pins that TCK, TMS, _TRST, and _ASEBRKAK/_ASEBRK

have been multiplexed. Function 1 can be used when the pins that AUD has been multiplexed

are not connected to the emulator in on-chip debugging mode.

The AUD pins are multiplexed with other pins. The AUD function cannot be used for the

initial values because they are used as other functions. To use the initial value as the AUD

function, set the AUD pins to be used from [AUD pin select] of the [Configuration] dialog box.

The emulator rewrites the registers in the pin function controller (PFC) to enable the specified

AUD pins before executing the user program. When those registers are changed by the user

program, take care so that the settings of the AUD pins is not changed.

Table 3.6 shows the bits and the values corresponding to the AUD function.

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 89 90

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Renesas SH7210 Series Manuel d'utilisateur Page 52