SAB82538 Datasheet, PDF (99/253 Pages) Infineon Technologies AG – ICs for Communications

SAB 82538
SAF 82538
2.6.6 Test Mode
To provide for fast and efficient testing, the ESCC8 can be operated in a test mode by
setting the TLP bit in the MODE register.
The on-chip serial input and output (T×D-R×D) are connected, generating a local
loopback.
As a result, the user can perform a self-test of the ESCC8.
2.7 Universal Port
Four general purpose bi-directional parallel ports are provided on pins PA0-7, PB0-7,
PC0-7 and PD0-3. Every pin is separately programmable via the Port Configuration
Register PCR to operate as an output or an input.
If defined as output, the state of the pin is directly controlled via Port Value Register PVR.
A read-back is also provided.
If defined as input, the state of the pin is monitored. The value is readable via PVR. All
changes may be (if desired) indicated via interrupt. Assigned registers: Port Interrupt
Status register (PIS) and Port Interrupt Mask register (PIM).
Semiconductor Group
99