PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 179

• Manufacturer Part Number: PXB4221
• Description: IWE8 Interworking Element for 8 E1/T1 Lines
• Manufacturer: Infineon Technologies AG

ftri
frri
om
cbb
1)
Data Sheet
Make sure that no clocks are applied to the transmitter when switching to GIM
1 =
Framer transmit rising edge
valid for GIM
0 =
1 =
Framer receive rising edge
valid for GIM:
0 =
1 =
valid for SYM2:
0 =
1 =
Operation Mode
00 =
01 =
10 =
11 =
Clock Boost Bypass
0 =
1 =
FRMFB is active high
FTDAT outputs are clocked with the falling edge of FTCKO
FTDAT outputs are clocked with the rising edge of FTCKO
FRDAT inputs are sampled with the falling edge of FRCLK
FRDAT inputs are sampled with the rising edge of FRCLK
FRDAT inputs are sampled with the falling edge of RFCLK
FTDAT outputs are clocked with the rising edge of RFCLK
FRDAT inputs are sampled with the rising edge of RFCLK
FTDAT outputs are clocked with the falling edge of RFCLK
FAM: FALC mode
FTCKO and FRCLK running at 8.192 MHz
GIM: Generic Interface mode
FTCKO and FRCLK running at 2.048 (E1) or 1.544 (T1) MHz
SYM8: E1 synchronous mode (RFCLK = 8.192 MHz)
SYM2: E1 synchronous mode (RFCLK = 2.048 MHz)
Normal operation: the external clock at RFCLK in internally
doubled to serve as reference clock for the internal DPLL
Clock boost function bypassed
179
PXB4219 / PXB4220 / PXB4221
1)
Register Description
2002-05-06
.