SM8702AM

NIPPON PRECISION CIRCUITS—13

PCI Clock Stop Function

In mobile mode, selected using MODE (pin 7), the PCICLK[0:4] clock outputs can be stopped by external pin

control, in the same way as the CPU clock stop function.

When PCI_STOP# goes LOW, the PCI clock outputs (PCICLK) stop, and when PCI_STOP# goes HIGH, the

PCI clock outputs start. In either case, the PCI_STOP# signal is sampled internally on the rising edge of PCI-

CLK, and the output state transition occurs with 1 PCI clock cycle delay.

CPU_STOP#

PCICLK

(external)

PCI_STOP#

(All "H")

PCICLK_F

(free-running)

CPUCLK

(internal)

PCICLK

(internal)