Analog Devices ADSP-SC58 Series Hardware Reference Manual page 680

ADSP-SC58x PADS Register Descriptions
Table 14-40: PADS_PCFG0 Register Fields (Continued)
Bit No.
(Access)
1:0 EMAC0
(R/W)
14–108
Bit Name
PTP Clock Source 0.
The PADS_PCFG0.EMAC0 selects the clock source for the PTP Block in EMAC0.
ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference
Description/Enumeration
0 EMAC0_RMII CLK
1 SCLK
2 External Clock
3 SCLK