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Section 22 PCI Controller (PCIC)
SH7751 Group, SH7751R Group
Page 978 of 1128
R01UH0457EJ0301 Rev. 3.01
Sep 24, 2013
1. If the problem concerns target latency, clear to 0 bit 12 (target bus timeout interrupt mask) in
the PCI arbiter interrupt mask register (PCIAINTM) to mask the target bus timeout interrupt.
2. If the problem concerns master data latency, clear to 0 bit 11 (master bus timeout interrupt
mask) in the PCI arbiter interrupt mask register (PCIAINTM) to mask the master bus timeout
interrupt.
Note that if the above interrupts are masked, no interrupt will occur when the 16-clock rule or
8-clock rule of PCI 2.1 specification is violated, even if the violation is detected.
A
0
PCICLK
AD[31:0]
C/
BE
[3:0]
FRAME
IRDY
DEVSEL
TRDY
STOP
1
2
3
4
11
12
13
14
15
16
C
PCIAINT: Bit 12 asserted
Figure 22.24 Target Bus Timeout Interrupt Generation Example 1
(Example in which the Target Device Asserts
STOP
at the Sixteenth Clock Cycle after
FRAME
Was Asserted)