Renesas Stereo System SH7709S Manual De Usuario
Rev. 5.00, 09/03, page 619 of 760
Bit 5—A/D Start (ADST): Starts or stops A/D conversion. The ADST bit remains set to 1 during
A/D conversion. It can also be set to 1 by external trigger input at the
A/D conversion. It can also be set to 1 by external trigger input at the
ADTRG pin.
Bit 5: ADST
Description
0
A/D conversion is stopped
(Initial value)
1
(1) Single mode: A/D conversion starts; ADST is automatically cleared to 0 when
conversion ends
(2) Multi mode: A/D conversion starts; ADST is automatically cleared to 0 when
conversion ends on all selected channels
(3) Scan mode: A/D conversion starts and continues, cycling through the selected
channels, until ADST is cleared to 0 by software, by a reset, or by a transition
to standby mode
Bit 4—Multi Mode (MULTI): Selects single mode, multi mode or scan mode. For further
information on operation in these modes, see section 20.4, Operation.
information on operation in these modes, see section 20.4, Operation.
Bit 4: MULTI
ADCR: Bit5: SCN
Description
0
0
Single mode
(Initial value)
1
1
0
Multi mode
1
Scan mode
Bit 3—Clock Select (CKS): Selects the A/D conversion time. Clear the ADST bit to 0 before
changing the conversion time.
changing the conversion time.
Bit 3:CKS
Description
0
Conversion time = 536 states (maximum)
(Initial value)
1
Conversion time = 266 states (maximum)