MSP430G2452: MSP430G2452 ADC10 triggering from TA0

I'm trying to trigger ADC10 sample/conversion from TA0 using CCR0 output, without going through ISR.
It seems logical, if I have CCR0 output toggle with OUTMOD_4, and have ADC10CTL1 |= SHS_2, per diagram in SLAU144J, page 535, the trigger should pass through, without need to set ADC10SC.
Although, there is a fine print in ADC10CTL1 register description on page 555, "Timer triggers are from Timer0_Ax if more than one timer module exists on the device.", which makes me think that at least 2 timers should exist in the MSP430x2xx family device.
Well, it does not work. With multiple experiments, it looks like ADC10SC must be set every time sample/conversion needs to be done, and only then CCR0 output will trigger it.

Please confirm or rebut my finding.

Below is the partial code.

#include <msp430g2452.h>
#define LED                   BIT0
#define CCR0_OUT       BIT1

void TA0_init(void);
void ADC_init(void);

void main(void) {
    WDTCTL = WDTPW + WDTHOLD;
    if (CALBC1_16MHZ==0xFF) {WDTCTL=0xDEAD;}
    BCSCTL1 = CALBC1_16MHZ;
    DCOCTL = CALDCO_16MHZ;
    BCSCTL3 |= LFXT1S_2;     // VLOCLK selected for ACLK, ~15KHz
    BCSCTL1 |= DIVA_0;          // ACLK/1, used for TA0 in LPM0
    BCSCTL2 |= DIVS_1;         // SMCLK/2 =8MHz, used for ADC experiment

    P1SEL = CCR0_OUT;             // Scope test point for TA0.CCR0 output
    P1DIR = LED +CCR0_OUT;   //  Scope test points for ADC ISR and TA0.CCR0 output

    TA0_init();
    ADC_init();

    _EINT();                                 // Enable ISR

    TA0CTL |= MC_1;                 // Start the TIMER0 up to CCR0

    for(;;){
        _BIS_SR(CPUOFF);         // Enter LPM0
    }
}
 

void ADC_init(void){            // Read Thermometer, Trigg. from TA0CCR0, clocked ADC10OSC (or SMCLK)
    ADC10CTL0 = SREF_0 + ADC10SHT_2 + REF2_5V + REFON + ADC10ON + ADC10IE;
    ADC10CTL1 = INCH_10 + SHS_2 + ADC10DIV_0 + ADC10SSEL_0 + CONSEQ_0;  // try ADC10SSEL_3
    ADC10DTC1 = 0;
    ADC10CTL0 |= ENC + ADC10SC; // Set ADC10SC for first sample/conversion
}

void TA0_init(void){                 // Timer A for de-bounce and other operations
    TA0CTL = TACLR;                      // Clear TAR
    TA0CTL = TASSEL_1 + ID_0;    // ACLK (11.5KHz), /1, (+ MC_1 Up TO CCR0 Mode)
    TA0CCR0 = 2944;                // TA0CCR0=ACLK*T(sec)=256msec
    TA0CCTL0 = OUTMOD_4;            // Toggle  CCR0 OUT
}

#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void){
    _nop();
    P1OUT ^=LED;                         // visual/scope output on every ADC10 ISR
    volatile int ADC_MEM = (ADC10MEM & 0x03FF);  // need to access ADC10MEM to clear ISR
    ADC_MEM ^= 0xFFFF;            // Do something stupid with ADC_MEM to keep compiler happy
    ADC10CTL0 |= ADC10SC;      // Set ADC10SC for next sample/conversion triggered be TA0 CCR0 out
}