Debug Interface Connection - Cypress FR81S CY91F52 Series Recommendation For Hardware Setup

2.12

Debug Interface connection

Debugging is only supported by the 50 Ohm single-wire debug system, which is shared with mode pin 'DEBUGIF'.
Concerning current limitation by an external resistor on programming tool side and maximum clamping current/structure
at the 'DEBUGIF' pin specified values must be taken out of data sheet.
(R1 = 43 R, R2 = 10 k, D1 e.g. HZM6.2Z4MFA-E, D2 schottky diode e.g. BAS40, Debug connector: SMA 50R connector
for development target boards.)
MDI bus maximum communication speed
(from MCU to SPEED-BOX)
MDI bus maximum communication speed
(from SPEED-BOX to MCU)
L1 wiring length
L2 wiring length
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Figure 4. How to connect Debug System with Programming Connector
Table 4. SPEED-BOX General Specifications
Item
Please check for detailed OCDS layout design rules of the
MB2100-01-E (see chapter
and the chapter 'On Chip Debugger: OCD' of the hardware
manual.
Document No. 002-09375 Rev. *B
Recommendation for Hardware Setup 32-Bit FR81S Family
Specification
50 Mbps
Does not depend on cable* length.
(* cable between SPEED-BOX and ECU)
Cable* length 2 m or less : 25 Mbps
Cable* length 5 m or less : 12.5 Mbps
Cable* length 10 m or less : 6.25 Mbps
(* cable between SPEED-BOX and ECU)
As short as possible, keep less than 5 cm.
Less than 15 cm.
Flash Programming Connection
)
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