tdat04622 ETC-unknow, tdat04622 Datasheet - Page 3

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

TDAT042G5 Device Advisory
for Version 1 and 1A of the Device
System Programming (SP)
SP1. Required Provisioning Sequence and Clocks
The core registers must be written prior to provisioning any other registers (1) to establish the internal clock
rates for the device, and (2) because writing to certain core registers resets the remainder of the device. Cer-
tain clocks must be present to read/write registers prior to provisioning the device.
One of the following clocks must be present prior to provisioning to enable register access:
I
I
Provisioning must be implemented in the following sequence:
I
I
I
It is recommended, but not required, that the remainder of the device be provisioned in the following order:
I
I
Workaround
Provisioning must be implemented in the following sequence:
I
I
Corrective Action
Not applicable. Use above procedure in provisioning the device.
TxCKP and TxCKN
MPU clock (microprocessor interface synchronous mode only)
Core register 0x0010 (mode) must be provisioned first
Core register 0x0011 (channel [A—D] control) second
Remainder of the core registers must then be provisioned (order does not matter)
OHP , PT, and DE blocks (order does not matter)
UT block to turn on the data source to the master and slave
Apply either TxCKP and TxCKN or MPU clock.
Provision core:
— Mode, register 0x0010
— Channel [A—D] control, register 0x0011
— Remainder of the core
May 2001
Advisory