ZL50075GAC ZARLINK [Zarlink Semiconductor Inc], ZL50075GAC Datasheet - Page 43

• Manufacturer Part Number: ZL50075GAC
• Description: 32 K Channel Digital Switch with High Jitter Tolerance, Rate Conversion per Group of 2 Streams (8, 16, 32 or 64 Mbps), and 64 Inputs and 64 Outputs
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

14.6
The Output Clock Control Register is used to select the desired source, frequency, and logic sense of the output
clocks. The bit functions of the Output Clock Control Register are illustrated in Table 25.
31 - 28
27 - 14
10 - 9
8 - 7
External Read/Write Address: 40284
Reset Value: 060D1C3C
Bit
13
12
11
31
15
0
0
Output Clock Control Register
30
14
0
0
Unused
Unused
Name
CKO1
CKO1
POL1
POL1
RATE
SEL1
GCO
CKO
FPO
SRC
1 - 0
1 - 0
SEL1
GCO
29
13
0
H
POL1
FPO
Reserved. In normal functional mode, these bits MUST be set to zero.
Reserved. In normal functional mode, these bits MUST be set to 01100000110100.
GCI-Bus Selection for FPo1
When this bit is low, FPo1 is set for ST-BUS mode.
When this bit is high, FPo1 is set for GCI-Bus mode.
Frame Pulse Polarity Selection for FPo1
When this bit is low, FPo1 is set for active high.
When this bit is high, FPo1 is set for active low.
Clock Polarity Selection for CKo1
When this bit is low, CKo1 is set for the positive clock edge.
When this bit is high, CKo1 is set for the negative clock edge.
Output Clock Rate for CKo1 and FPo1
The output clock rate can not exceed the selected clock source rate. All rates are avail-
able when the internal system clock is selected as clock source.
Output Clock Source for CKo1 and FPo1
28
12
0
POL1
CKO
27
11
CKO1RATE1 - 0
0
CKO1SRC1 - 0
H
Table 25 - Output Clock Control Register
RATE1
CKO1
00
01
10
00
01
10
11
11
26
10
1
RATE0
CKO1
25
1
9
Zarlink Semiconductor Inc.
ZL50075
CKO1
SRC1
24
0
8
16.384 MHz
32.768 MHz
65.536 MHz
8.192 MHz
43
CKo1
Internal System Clock
Output Timing Source
CKO1
SRC0
23
CKi0 and FPi0
0
7
Description
Reserved
Reserved
SEL0
GCO
22
0
6
POL0
FPO
21
0
5
120 ns
FPo1
60 ns
30 ns
15 ns
POL0
CKO
20
0
4
RATE1
CKO0
19
1
3
RATE0
CKO0
18
1
2
CKO0
SRC1
Data Sheet
17
0
1
CKO0
SRC0
16
1
0