CY7C66113C-XC CYPRESS [Cypress Semiconductor], CY7C66113C-XC Datasheet - Page 34

• Manufacturer Part Number: CY7C66113C-XC
• Description: Full-Speed USB (12 Mbps) Peripheral Controller with Integrated Hub
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-08024 Rev. *B
Table 16-1. Interrupt Vector Assignments
16.2
Interrupt latency can be calculated from the following equation:
Interrupt latency =
For example, if a five-clock cycle instruction such as JC is being executed when an interrupt occurs, the first instruction of the
Interrupt Service Routine executes a minimum of 16 clocks (1+10+5) or a maximum of 20 clocks (5+10+5) after the interrupt is
issued. For a 12-MHz internal clock (6-MHz crystal), 20 clock periods is 20/12 MHz = 1.667 s.
16.3
The USB Controller recognizes a USB Reset when a Single Ended Zero (SE0) condition persists on the upstream USB port for
12–16 s. SE0 is defined as the condition in which both the D+ line and the D– line are LOW. A USB Bus Reset may be recognized
for an SE0 as short as 12 s, but is always recognized for an SE0 longer than 16 s. When a USB Bus Reset is detected, bit 5
of the Processor Status and Control Register (Figure 15-1) is set to record this event. In addition, the controller clears the following
registers:
A USB Bus Reset Interrupt is generated at the end of the USB Bus Reset condition when the SE0 state is deasserted. If the USB
reset occurs during the start-up delay following a POR, the delay is aborted as described in Section 7.1.
16.4
There are two periodic timer interrupts: the 128- s interrupt and the 1.024-ms interrupt. The user should disable both timer
interrupts before going into the suspend mode to avoid possible conflicts between servicing the timer interrupts first or the suspend
request first.
16.5
There are five USB endpoint interrupts, one per endpoint. A USB endpoint interrupt is generated after the USB host writes to a
USB endpoint FIFO or after the USB controller sends a packet to the USB host. The interrupt is generated on the last packet of
Not Applicable
1
2
3
4
5
6
7
8
9
10
11
12
SIE Section:
Hub Section:
Interrupt Vector Number
Interrupt Latency
USB Bus Reset Interrupt
Timer Interrupt
USB Endpoint Interrupts
USB Device Address Registers (0x10, 0x40)
Hub Ports Connect Status (0x48)
Hub Ports Enable (0x49)
Hub Ports Speed (0x4A)
Hub Ports Suspend (0x4D)
Hub Ports Resume Status (0x4E)
Hub Ports SE0 Status (0x4F)
Hub Ports Data (0x50)
Hub Downstream Force (0x51).
(Number of clock cycles remaining in the current instruction) + (10 clock cycles for the CALL instruction) +
(5 clock cycles for the JMP instruction).
0x0000
0x0002
0x0004
0x0006
0x0008
0x000A
0x000C
0x000E
0x0010
0x0012
0x0014
0x0016
0x0018
ROM Address
Execution after Reset begins here
USB Bus Reset interrupt
128- s timer interrupt
1.024-ms timer interrupt
USB Address A Endpoint 0 interrupt
USB Address A Endpoint 1 interrupt
USB Address A Endpoint 2 interrupt
USB Address B Endpoint 0 interrupt
USB Address B Endpoint 1 interrupt
USB Hub interrupt
DAC interrupt
GPIO/HAPI interrupt
I
2
C interrupt
Function
CY7C66013C
CY7C66113C
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